Browse the evidence

For recreationally trained men, performing resistance training 4 times per week yields significantly greater upper-body strength gains (bench press and arm curl) than 2 times per week when total weekly volume is equated, while muscle size and power adaptations remain similar between frequencies.

If you are a recreationally trained man focused on maximizing upper-body strength (bench press, curls), aim for 4 resistance training sessions per week. If your primary goals are muscle size (hypertrophy) or power, 2 sessions per week is equally effective, provided you perform the same total amount of work (sets x weight) in those 2 sessions as you would in 4. Do not assume that adding more workout days automatically adds more muscle; it adds strength efficiency for upper-body lifts.

An East Asian diet-mimicking plan based on Mediterranean and DASH principles, delivered as ready meals, significantly improves glycemic control (HbA1c) and reduces cardiovascular risk factors compared to a self-prepared food exchange system-based diet in Korean adults with type 2 diabetes.

For Korean adults with type 2 diabetes, switching from a traditional food exchange system to a culturally adapted Mediterranean/DASH-style diet can significantly lower HbA1c and improve cardiovascular risk factors. The key to success in this study was the provision of ready meals, which ensured adherence to the specific macronutrient profile (lower net carbs, higher unsaturated fats) without requiring participants to master new cooking techniques. If you struggle with adherence, consider a meal delivery service that offers similar low-glycemic, high-unsaturated-fat options tailored to your cultural preferences.

Various strength training methodologies (plyometric, occlusion, variable resistance, conventional, eccentric, and concurrent) consistently increase indicators of muscle fatigue (blood lactate, heart rate, RPE, DOMS, and ammonia), and the magnitude of this fatigue depends on the specific training method, population characteristics, and sex.

Expect to feel fatigued during and after strength training. This is normal and varies by the type of exercise (e.g., plyometrics vs. occlusion) and your fitness level. Monitor indicators like heart rate and perceived exertion to manage your training load and recovery.

For recreationally resistance-trained individuals, performing low-bar back squats allows for the lifting of significantly greater loads compared to high-bar or safety-bar squats, making it the superior technique for maximizing strength output.

If your main goal is to lift the heaviest weight possible, use the low-bar squat technique. Place the bar lower on your upper back (below the traps) to allow for greater hip flexion and torso lean, which enables you to lift significantly more load than with high-bar or safety-bar techniques.

Safety-bar squats produce greater myoelectric activity in the gluteus maximus compared to high-bar squats, making them a potentially more effective tool for targeting gluteal hypertrophy.

If you want to specifically target your glutes for growth, try using a safety-bar squat. This specialized bar allows for a more upright torso position, which was found to increase gluteus maximus activation compared to the standard high-bar squat.

Multidisciplinary interventions combining diet, physical activity, pharmacological treatments, and bariatric surgery are required to effectively reduce cardiovascular risk and mortality in obese patients, as lifestyle changes alone are often insufficient.

Do not rely on diet and exercise alone to manage obesity-related heart risks. Because relapse is common with lifestyle changes alone, you should seek a multidisciplinary care plan that may include FDA-approved weight-loss medications or bariatric surgery alongside lifestyle modifications. This combined approach is the standard of care for reducing cardiovascular events and mortality in obese patients.

Early and lifelong treatment of obesity is critical to prevent weight recurrence, preserve lean body mass, and reduce cardiometabolic risk.

Treat obesity as a chronic condition requiring lifelong management, not a short-term diet. Focus on early intervention to prevent complications and preserve muscle mass. Use comprehensive strategies including nutrition, physical activity, behavioral counseling, and medical interventions as needed. Regular follow-ups are essential to maintain health and prevent weight recurrence.

Bariatric surgery (sleeve gastrectomy, gastric bypass, duodenal switch) provides superior long-term total weight loss (23.4%–40.7%) compared to GLP-1 receptor agonists (up to 25.3% with tirzepatide).

If your primary goal is maximum, durable weight loss, bariatric surgery currently outperforms GLP-1 medications in long-term results. However, surgery requires accepting permanent anatomical changes and potential risks. GLP-1s offer a less invasive alternative with significant weight loss, but require lifelong adherence to avoid regain and manage side effects. Choose based on your tolerance for invasiveness versus daily medication burden.

Bariatric surgery (specifically sleeve gastrectomy and Roux-en-Y gastric bypass) achieves sustained weight loss and high rates of type 2 diabetes remission, while also significantly improving or resolving obstructive sleep apnea and metabolic dysfunction-associated steatotic liver disease (MASLD).

If you have severe obesity with diabetes or sleep apnea, bariatric surgery (sleeve or bypass) is the most effective current treatment for reversing these conditions. It offers the best chance for diabetes remission and resolving sleep apnea, though you must be monitored for potential liver issues if you lose weight too quickly.

In obese patients with type 2 diabetes and no history of cardiovascular disease, weight loss is associated with reduced all-cause pharmacy costs, diabetes-specific medical costs, and total diabetes-specific healthcare costs.

If you are obese and have type 2 diabetes without heart disease, losing weight can help lower your overall medical bills, including doctor visits and diabetes-specific treatments. This makes weight management a financially beneficial part of your care.

A 12-week combined resistance exercise and protein supplementation intervention significantly increases lean body mass in community-dwelling older adults aged 75 and younger, but not in those older than 75.

If you are 75 or younger, this combined exercise and protein strategy is effective for adding muscle mass. If you are over 75, you may not gain significant muscle mass, but you will still gain significant strength and functional ability, so the intervention remains valuable for mobility.

Older adults with mobility-impairing disorders (frailty, sarcopenia, or osteoarthritis) benefit equally from combined resistance exercise and protein supplementation as those without these disorders in terms of absolute effects.

If you have frailty, sarcopenia, or osteoarthritis, this combined exercise and protein program is still effective for you. You can expect similar absolute improvements in strength and function as older adults without these conditions.

Personalized nutrition interventions yield significantly greater reductions in body weight, BMI, waist circumference, and LDL cholesterol in individuals carrying the FTO risk genotype (TT/TC) compared to those with the non-risk genotype (CC).

If you carry the FTO risk genotype (TT or TC), a personalized nutrition plan is likely to be significantly more effective for weight and lipid management than a standard one-size-fits-all approach. You should prioritize interventions that are tailored to your specific metabolic profile, as your body appears to respond more robustly to dietary changes in this genetic context.

Individualized Repetitions-in-Reserve (RIR) to velocity relationships provide acceptable prediction accuracy (mean error <2 repetitions) for resistance training monitoring and prescription, whereas general population models do not.

Stop using generic velocity charts for everyone. To prescribe training accurately, you must establish your own personal relationship between how fast the bar moves and how many reps you have left in reserve. Test this by performing sets to failure at different loads (e.g., 70%, 80%, 90% of 1RM) and recording the velocity for each Repetition-in-Reserve (RIR) level. Use this personal data to guide your daily training, adjusting loads to hit your specific velocity targets for desired RIRs, rather than guessing based on population averages.

Combining high-intensity resistance training with chronic chicken meat intake significantly increases muscle strength and lean body mass in elderly women more effectively than either intervention alone.

For elderly women looking to build muscle and strength, combining resistance training (3 times a week) with regular chicken meat consumption (approx. 110g, 3 times a week) is more effective than doing either one alone. Ensure the training intensity is challenging (around 70% of your max lift) and adjust weights as you get stronger.

Sugar-sweetened beverage (SSB) consumption is a major global driver of incident Type 2 Diabetes and Cardiovascular Disease, with the highest proportional burdens found in Latin America/Caribbean and Sub-Saharan Africa.

Reduce or eliminate sugar-sweetened beverages to significantly lower your risk of Type 2 Diabetes and heart disease. This is especially critical if you live in or originate from regions with high SSB consumption like Latin America or Sub-Saharan Africa, where the population-level risk is highest.

Multicomponent group-based physical activity interventions (combining aerobic, resistance, and/or mind-body exercises) significantly improve mobility, physical function, balance, and muscle strength in community-dwelling older adults.

To stay mobile as you age, join a group exercise class that mixes walking, strength training, and balance exercises. This combination is proven to keep your muscles strong and your balance sharp, reducing your risk of falls. You don't need supplements to achieve this; consistent group activity is the key.

Aerobic and resistance training interventions significantly reduce the risk of falls in older adults.

If you are worried about falling, start a group exercise program that includes strength and balance work. This is the most effective way to lower your fall risk. Staying inactive due to fear actually makes you more vulnerable.

Acute ingestion of 6 mg/kg caffeine significantly enhances mean repetition velocity during resistance exercise at loads of 75% and 90% of 1RM compared to placebo and control conditions.

Take 6 mg of caffeine per kg of body weight about an hour before lifting. This will likely increase your bar speed, especially when lifting heavy weights (75-90% of your max). It works best if you are already trained in resistance exercise.

Lengthened partial repetitions (LPs) elicit similar muscle hypertrophy and strength-endurance adaptations as full range of motion (ROM) repetitions in resistance-trained individuals.

If you are a trained lifter, you don't need to force full range of motion if it causes pain or joint issues. You can use lengthened partial reps (starting from the stretched position and going halfway up) and still build muscle and strength just as well as doing full reps. Just make sure you are training to failure and emphasizing the stretch.

Back squat training produces greater thigh hypertrophy (quadriceps and adductors) compared to hip thrust training.

If you want bigger quads and inner thighs, you need to do squats. Hip thrusts are great for glutes, but they don't build the rest of your legs as well as squats do.

A supervised 16-week strength training program performed at 70% 1RM with high volume induces significant strength gains, lean body mass increases, and favorable cardiac remodeling (LV/LA enlargement without functional impairment) in previously untrained women, with magnitude of adaptation similar to or exceeding that of men.

Perform supervised strength training 3 times a week at 70% of your one-rep max. Focus on compound movements (squats, presses, rows). Expect significant strength and lean mass gains within 16 weeks, comparable to men, along with improved heart health markers like ventricular enlargement without functional loss.

Resistance training over a full range of motion is superior to partial range of motion for hypertrophy.

To build the most muscle, perform your exercises through a full range of motion. Partial reps are less effective for hypertrophy.

Distributing a fixed weekly volume of resistance training across four sessions per week yields greater maximal strength gains than performing the same volume in a single session.

If you are an experienced lifter aiming to maximize your squat strength, split your weekly leg volume across four separate sessions (e.g., one heavy compound lift per day) rather than doing it all in one day. This allows you to handle heavier loads with better technique and less fatigue, resulting in significantly greater strength gains over 8 weeks compared to a single weekly session.