Browse the evidence

Low-load resistance training with blood flow restriction (LL-RT with BFR) produces muscle hypertrophy equivalent to high-load resistance training (HL-RT) across various repetition schemes, including sets to failure, 15-rep sets, and 75-rep segmented sets.

If you cannot lift heavy weights due to injury, age, or joint pain, you can still build muscle by using Blood Flow Restriction (BFR) with lighter weights (20-40% of your max). Perform this 2-3 times a week for 6-16 weeks. You can use different repetition schemes (like 15 reps or sets to failure) and still get similar muscle growth as heavy lifting.

Single-set resistance training performed to 2 repetitions in reserve (RIR-2) produces similar gains in muscular strength and local muscular endurance compared to training to failure (FAIL) in resistance-trained individuals.

If you are already trained, you do not need to train to failure on every set to build strength or muscle. Stopping your sets with 2 reps left in the tank (RIR-2) yields the same strength and endurance results as going to failure, while likely feeling better and allowing for better recovery. This makes training more sustainable and time-efficient.

Utilizing the hook grip (HG) during power cleans significantly increases one-repetition maximum (1RM), peak barbell velocity, and relative peak power compared to a standard closed grip (CG) in well-trained athletes.

If you perform power cleans or similar Olympic lifts, switch to the hook grip. It allows you to lift heavier loads and move the bar faster by securing the bar without excessive hand tension. Expect some thumb discomfort when you first start; give it a few weeks to adapt, and you will likely see improvements in your max lifts and power output.

Sarcopenic obesity, characterized by the combination of obesity and loss of lean muscle mass, is a significant nutrition risk that requires specific monitoring and interventions like enhanced protein intake and weight-bearing exercise.

If you are losing weight rapidly or are older, watch out for sarcopenic obesity (losing muscle along with fat). To protect your muscle, increase your protein intake and do weight-bearing exercises. Your doctor should monitor your body composition, not just your weight.

Muscle strength is a stronger determinant of quality of life and functional decline in older adults than muscle mass, making strength assessment superior to mass assessment for sarcopenia diagnosis.

Focus on maintaining or improving your leg strength (e.g., through resistance training) rather than just worrying about muscle size. Strength is the key metric for staying independent and healthy as you age.

Combining resistance training with a high-protein diet (1.2–1.6 g/kg/day) significantly enhances muscle hypertrophy and strength gains compared to resistance training alone.

To maximize muscle growth and strength, combine regular resistance training with a diet providing 1.2 to 1.6 grams of protein per kilogram of your body weight daily. This combination is the most effective non-drug method for building muscle. Ensure your protein intake is adequate to support the mechanical stress of training, as this synergy drives greater hypertrophy than training alone.

Resistance training combined with adequate protein intake (approx. 1.6 g/kg/day) maximizes muscle protein synthesis and hypertrophy by activating the mTORC1 pathway, whereas chronic mTOR hyperactivation without balance contributes to metabolic disease.

To maximize muscle growth, engage in resistance training and consume approximately 1.6 grams of protein per kilogram of body weight daily. Distribute this protein evenly across your meals, aiming for about 0.25 g/kg per meal if you are younger, or 0.40 g/kg per meal if you are older to overcome age-related anabolic resistance. Prioritize high-quality, leucine-rich protein sources like whey. To support long-term metabolic health, balance this anabolic focus with periodic AMPK activation through intermittent fasting or aerobic exercise.

Individualized nutritional rehabilitation, including whey protein (10g 3x/day), fish oil, and vitamin D supplementation combined with resistance training, significantly improves muscle strength, cognitive function, and quality of life in elderly patients with sarcopenia and cognitive impairment compared to standard care.

For elderly patients with both muscle loss and cognitive decline, a standard diet and exercise plan is often insufficient. A specialized program combining high-quality whey protein (10g, 3 times daily), Omega-3s with Vitamin D, and targeted resistance training, managed by a multidisciplinary team, significantly improves strength, thinking skills, and daily living ability. This approach requires more resources but yields superior functional outcomes for this vulnerable population.

Higher weekly resistance training load is associated with greater lean body mass index (LBMI) in amateur bodybuilders, but this relationship is curvilinear, showing diminishing returns and potential stagnation at very high loads.

Track your weekly training load (sets x intensity/effort). You will likely see muscle gains as you increase this load, but once you reach a 'high' level, adding more volume yields very little extra muscle. Stop increasing volume when you hit the 'high' band; further increases may just add fatigue without adding size.

Achieving a sex-specific high lean-mass profile is significantly associated with a combination of moderate-to-high training load, high recovery status, and adequate protein intake.

To maximize your lean mass, you need to hit the 'sweet spot' of training: high enough to stimulate growth, but not so high that you can't recover. Ensure you are eating enough protein (~1.75 g/kg) and sleeping well. It is the combination of these factors that predicts the best physique.

Blood flow restriction (BFR) training using low loads (30% 1RM) significantly improves quadriceps and hamstring muscle strength and physical function in the early postoperative period (up to 12 weeks) following anterior cruciate ligament (ACL) reconstruction compared to conventional high-load resistance training (70% 1RM).

If you have recently had ACL surgery, you do not need to lift heavy weights immediately to rebuild your leg strength. Using Blood Flow Restriction (BFR) with light weights (30% of your max) twice a week for 12 weeks can actually build your quadriceps and hamstrings faster and with less pain than traditional heavy lifting. This approach helps you regain function and reduces pain early on, provided you follow your surgeon's clearance protocols.

Under volume-equated conditions, performing resistance training 4 times per week produces greater upper-body maximal strength gains than 2 times per week, while both frequencies yield similar improvements in muscle size (hypertrophy) and power.

If you can only train twice a week, focus on full-body workouts to build muscle size and power; you will get strong enough for most goals. If you have the time and want to maximize upper-body strength (like bench press), split that same total amount of work across four sessions. Do not increase your total volume when adding days; just spread it out.

In trained males, performing resistance training 3 days per week yields equivalent muscle strength and hypertrophy gains to performing it 6 days per week, provided total weekly training volume is equated.

If you are an experienced lifter, you do not need to train 6 days a week to maximize your muscle growth or strength. As long as you are performing the same total number of sets per muscle group per week, splitting those sets across 3 days will yield the same results as splitting them across 6 days. Focus on recovering well and hitting your volume targets rather than maximizing gym days.

Creatine supplementation increases fat-free mass (FFM) and lean body mass (LBM) only when combined with resistance training (RT); it produces no significant lean mass gains in non-resistance training contexts.

If your goal is to increase muscle mass, you must lift weights. Creatine will help you gain about 3.4 kg of lean mass if you train, but it will not build muscle if you only take the supplement without resistance exercise.

FDA-approved pharmacologic weight loss medications (lorcaserin, naltrexone/bupropion, phentermine/topiramate, liraglutide, orlistat) produce statistically and clinically significant weight loss and improve cardiovascular/glycemic risk factors when used as adjuncts to lifestyle interventions.

If you have a BMI of 30 or higher (or 27 with health issues like high blood pressure or diabetes), and lifestyle changes alone haven't been enough, FDA-approved weight loss medications are a scientifically supported option. These drugs work alongside diet and exercise to help you lose weight and improve heart health markers. Talk to your doctor about whether you qualify for these treatments, as insurance coverage and prescribing habits vary.

Combined lifestyle interventions integrating both dietary changes and structured exercise produce greater improvements in diabetes management (weight loss, glycemic control, cardiovascular risk) than either intervention alone.

Do not choose between diet and exercise; do both. Work with a healthcare provider to create a personalized plan that includes a balanced diet and at least 150 minutes of weekly exercise. This combination offers the best protection against complications and medication dependence.

Optimal combined SPAN behaviors (high sleep 8.0-9.4h, high MVPA 42-104min, high diet quality 57.5-72.5) are associated with a 57% lower risk of MACE compared to the lowest tertile of all behaviors.

To maximize cardiovascular protection, aim for 8-9.5 hours of sleep, 42-104 minutes of moderate-to-vigorous exercise daily, and a high-quality diet (score 32.5-50.0). This combination is associated with a 57% lower risk of major cardiovascular events compared to having low levels of all three behaviors.

Metabolic bariatric surgery (MBS) provides superior long-term weight loss and glycemic control compared to non-surgical management in patients with obesity and type 2 diabetes.

For patients with severe obesity and type 2 diabetes, metabolic bariatric surgery offers significantly better long-term weight loss and blood sugar control than non-surgical management. While surgery is not for everyone, those who undergo it maintain much greater weight loss (22% vs 8.6%) and better glycemic control over five years. If surgery is not an option, intensive lifestyle modification and pharmacotherapy are critical alternatives to mitigate health risks.

Obesity treatments (lifestyle, medications, surgery) improve obesity-related diseases, physical health-related quality of life (HrQoL), and body image, with the magnitude of benefit often correlating with the amount of weight loss.

Know that your treatment will likely improve your health conditions, energy, and how you feel about your body, even if weight loss is slow. Different treatments offer different benefits; for example, surgery and newer medications often provide greater health gains than lifestyle changes alone. Discuss with your provider which treatment best addresses your specific health concerns, such as heart disease or joint pain.

Combined aerobic and resistance exercise with a caloric deficit reduces knee pain incidence and improves physical function in overweight adults with chronic pain.

If you have chronic joint pain and are overweight, start with low-impact aerobic activity (like walking or cycling) for 150 minutes a week and add two days of light strength training. Combine this with a modest calorie reduction (500-1000 calories less per day). Increase intensity slowly only if your pain allows, focusing on consistency over intensity to rebuild joint stability and reduce inflammation.

Mediterranean and plant-forward dietary patterns improve glycemic control and reduce type 2 diabetes risk more effectively than rigid single-nutrient prescriptions.

Adopt a Mediterranean or plant-forward eating style focusing on whole foods, fiber, and unsaturated fats. Avoid rigid 'diet' labels; prioritize long-term sustainability and individual metabolic response over short-term restriction.

Adequate fruit and vegetable intake (>5 days/week meeting ≥100g/day threshold) and a balanced meat-vegetable diet are protective against stroke, reducing risk by approximately 41-57% compared to low intake or vegan diets.

Eat more fruits and vegetables daily (aim for >100g each) and maintain a balanced diet that includes moderate amounts of meat. This combination is strongly associated with a significantly lower risk of stroke compared to low intake or strict vegan diets. Focus on variety and balance rather than extreme restriction.

High consumption of ultra-processed foods is associated with increased risks of obesity, type 2 diabetes, and cardiovascular disease, independent of nutrient profile.

Reduce your intake of ultra-processed foods (items with industrial ingredients, additives, or intense processing) by focusing on whole, minimally processed foods. This shift is supported by strong evidence to lower your risk of obesity, diabetes, and heart disease.

Adherence to a healthful plant-based diet (high in whole grains, fruits, vegetables, nuts, legumes, and vegetable oils) is associated with a significantly lower risk of frailty in older women, whereas adherence to an unhealthful plant-based diet (high in refined grains, potatoes, sugar-sweetened beverages, and sweets) is associated with a higher risk.

To reduce the risk of frailty as you age, focus on the quality of your plant-based foods. Prioritize whole grains, fruits, vegetables, nuts, legumes, and vegetable oils. Limit refined grains, potatoes, sugary drinks, and sweets. You do not need animal products to maintain muscle and bone health; a well-planned diet rich in these healthy plant foods is associated with a significantly lower risk of frailty.