Browse the evidence

Tennis training must be specific to match the sport's intermittent nature (points of 3-15 seconds with 1:2 to 1:5 work-to-rest ratios) rather than relying on general endurance or continuous aerobic training.

Stop training tennis like you are running a marathon. Design your drills to mimic actual match conditions: short bursts of high intensity (3-15 seconds) followed by specific rest periods (1:3 to 1:5 work-to-rest ratio). Focus on stop-start movements and multidirectional agility rather than continuous jogging.

Fatigue significantly reduces hitting accuracy (up to 81%) and alters biomechanics, making rest periods critical for technical drills.

When practicing shots, ensure you are not fatigued. If you are tired, your accuracy drops by up to 81% and your mechanics break down, increasing injury risk. Use longer rest periods during technical drills to maintain high-quality movement patterns.

Tennis players require specific shoulder flexibility training to prevent injury, as playing alone does not improve external rotation and may lead to imbalances.

Add specific shoulder flexibility training to your routine, focusing on external rotation. Playing tennis alone increases internal rotation but decreases external rotation, creating an imbalance that leads to injury. Perform this training year-round.

Adhering to high-quality dietary patterns, as measured by HEI, AHEI, or DASH scores, is inversely associated with a reduced risk of all-cause mortality, cardiovascular disease, cancer, type 2 diabetes, and neurodegenerative diseases.

Adopt a dietary pattern that emphasizes fruits, vegetables, whole grains, lean proteins, and healthy fats while limiting sodium, added sugars, and saturated fats. This approach, validated by indices like DASH, HEI, or AHEI, is associated with a 14-20% reduction in the risk of major chronic diseases and mortality. Start by swapping refined grains for whole grains and increasing vegetable variety.

Focusing on whole foods and their natural matrix (food synergy) yields superior health outcomes compared to isolating and supplementing single nutrients, as the food matrix provides synergistic interactions that isolated components lack.

Prioritize eating whole, minimally processed foods (like fruits, vegetables, whole grains, nuts, and seeds) over taking isolated nutrient supplements. The natural combination of nutrients and phytochemicals in these foods works synergistically to promote health, whereas isolated supplements often fail to provide the same benefits and may even be harmful.

Initiating or sustaining moderate-to-vigorous physical activity (at least once per week) in older adulthood (60+) is associated with a significantly higher likelihood of healthy ageing, defined as surviving without major chronic disease, cognitive or physical impairment, or depressive symptoms.

Start or continue moderate-to-vigorous physical activity at least once a week, regardless of your current age. Even if you have been inactive, becoming active in older adulthood is associated with a significantly higher chance of healthy ageing, defined as avoiding major chronic diseases, cognitive or physical decline, and depression.

Adherence to a Mediterranean Diet (MD) reduces the incidence of type 2 diabetes and improves glycemic control (HbA1c) independent of weight loss.

Adopt a Mediterranean-style diet focusing on fruits, vegetables, legumes, olive oil, and nuts. You do not need to strictly count calories or restrict energy intake to see improvements in blood sugar and diabetes risk.

Combining the Mediterranean Diet with physical activity (specifically moderate-to-heavy exercise or HIIT) augments anti-inflammatory and metabolic benefits compared to either intervention alone.

Do not rely on diet or exercise alone. Combine a Mediterranean-style diet with regular physical activity (such as HIIT or moderate-to-heavy exercise) to maximize anti-inflammatory benefits and metabolic health.

Strength training induces selective hypertrophy in the quadriceps femoris of older women, with varying degrees of growth across different muscle heads (VL, VM, VI, RF) along the length of the femur.

Expect uneven muscle growth in your quads; some parts (like the vastus lateralis and medialis) may grow more than others (like the rectus femoris). This is normal and does not indicate ineffective training.

Prolonged bed rest and immobility in critical care environments cause rapid, significant loss of muscle mass and strength, with up to 40% of muscle strength lost within the first week.

In the ICU, immobility causes rapid muscle loss, even with adequate nutrition. The key to preventing this is early mobilization and minimizing sedation as much as clinically possible, rather than just focusing on feeding.

Twelve weeks of progressive weight-lifting training significantly increases maximal weight-lifting capacity and muscle cross-sectional area in elderly men (60-70 years old), demonstrating that older muscles retain the capacity for hypertrophy and strength gains similar to younger populations.

If you are in your 60s or 70s and healthy, you can still build significant strength and muscle. Start with lighter weights (50% of what you can lift once) and gradually increase the weight over 12 weeks. Focus on compound movements like leg press, bench press, and curls. Consistency (3 days a week) and progressive overload are key.

Adherence to low-risk lifestyle factors (whole food/Mediterranean diet, physical activity, stress management, sleep) shifts tissue cross-talk from a proinflammatory to an anti-atherogenic milieu, reducing cardiovascular risk independently of conventional risk factor changes.

Focus on eating whole, unprocessed foods (like the Mediterranean pattern with olive oil/nuts) and staying active, rather than obsessing over calorie counts or fat grams. This approach improves your body's internal environment (reducing inflammation) and protects your heart, even if your weight or cholesterol numbers don't change drastically.

Regular, moderately intense aerobic exercise combined with antihypertensive medication significantly reduces diastolic blood pressure and regresses left ventricular hypertrophy in African-American men with severe hypertension.

If you have severe high blood pressure, don't avoid exercise. Start with moderate aerobic activity like stationary cycling, aiming for 3 sessions a week where you keep your heart rate at 60-80% of your maximum. This approach is safe, helps lower your blood pressure, and can even reverse heart thickening, potentially allowing you to reduce your medication dosage under a doctor's supervision.

Eccentric and mixed resistance training protocols restore muscle strength and induce greater hypertrophy than concentric-only training following knee immobilization.

If you have been immobilized (e.g., casted leg), prioritize eccentric (lengthening) or mixed resistance exercises over standard concentric (shortening only) exercises when you start moving again. This approach will restore your strength and muscle size significantly faster and to a greater degree than standard lifting. Expect to complete roughly 1,800 reps over 12 weeks, focusing on maximum effort.

A 12-week moderate-intensity aerobic and resistance exercise training program significantly reduces Obstructive Sleep Apnea (OSA) severity, measured by Apnea-Hypopnea Index (AHI), in sedentary overweight/obese adults, independent of significant body weight loss.

If you have moderate Obstructive Sleep Apnea and are overweight, committing to a structured exercise program can significantly reduce the severity of your condition, even if you don't lose weight. Aim for 150 minutes of moderate aerobic activity (like brisk walking or cycling) spread over 4 days a week, plus two days of resistance training. You should see improvements in your sleep apnea index and sleep quality within 12 weeks.

Adding blood flow restriction (BFR) to low-load resistance training or walking significantly increases muscular strength and muscle mass in older adults compared to performing the same exercises without BFR.

Older adults can significantly improve their strength and muscle mass by adding blood flow restriction (BFR) to their existing low-intensity activities, such as light resistance training or walking. This method is much more effective than doing these activities without BFR, offering a powerful tool for maintaining mobility and independence without the need for heavy weights.

Instability resistance training using devices like physioballs or wobble boards is not recommended as the primary exercise for hypertrophy, absolute strength, or power in trained athletes, as ground-based free-weight exercises produce greater core muscle activation and force output.

If your goal is to build muscle or get stronger, prioritize stable, ground-based free-weight exercises like squats, deadlifts, and overhead presses. Use unstable devices (like Swiss balls or balance boards) only for rehabilitation, warm-ups, or as supplementary exercises for balance, not as your main strength builders.

Instability resistance training is effective for decreasing the incidence of low back pain and improving balance in sedentary or rehabilitation populations, though it is less effective for high-level athletic performance.

If you are recovering from back pain or are sedentary, using unstable surfaces like Swiss balls can help improve balance and reduce pain. However, do not rely on them for building strength; transition to stable free weights as your capacity improves.

Small-sided games (SSGs) in soccer effectively integrate technical, tactical, and physiological demands, serving as a superior training method compared to traditional conditioning exercises by simultaneously improving physical capacities and sport-specific skills.

Use small-sided games (SSGs) instead of traditional non-ball conditioning drills. SSGs allow you to train physical fitness, technical skills, and tactical understanding all at once, making your training more efficient and specific to actual match play. Adjust pitch size, player numbers, and rules to target specific outcomes.

A culturally tailored lifestyle intervention combining moderate caloric restriction and aerobic exercise significantly improves glycemic control (HbA1c) and reduces blood pressure in older African-American adults with type 2 diabetes, independent of the modest magnitude of weight loss achieved.

For older African-American adults with type 2 diabetes, a structured program that respects cultural food preferences and provides a safe, supervised environment for moderate aerobic exercise can significantly improve blood sugar control and blood pressure, even if the amount of weight lost is small. The key is consistent behavioral support and safe physical activity, not just drastic dieting.

Dietary fiber must come from a diverse range of sources (soluble, insoluble, resistant starch) to maximize health benefits, as different fiber types have non-interchangeable physiological effects.

Don't just focus on the total grams of fiber. Ensure you are eating a mix of fiber types: insoluble fiber from wheat/rye for digestion, soluble fiber from oats/legumes for cholesterol, and resistant starch from cooled potatoes/pasta for gut health.

Higher adherence to plant-based dietary patterns is associated with a significantly lower risk of developing type 2 diabetes compared to poorer adherence.

To lower your risk of type 2 diabetes, shift your diet towards more plant-based foods. This means eating more fruits, vegetables, whole grains, legumes, and nuts, while reducing or excluding animal products. You do not need to be perfect; even moderate increases in plant-based food consumption are associated with a lower risk. Focus on 'healthy' plant foods rather than refined grains or sugars for the best results.

Short-to-moderate-term plant-based diets (≤24 months) significantly improve metabolic health outcomes, including weight loss, glycemic control, and lipid profiles, compared to conventional omnivorous diets in healthy, obese, and type-2 diabetic populations.

Adopting a plant-based diet (vegan or vegetarian) for 3 to 24 months is a highly effective strategy for improving metabolic health, including weight loss and better blood sugar and lipid control, especially if you are overweight or have type 2 diabetes. Focus on whole plant foods and compare your results to your previous omnivorous diet; the evidence strongly supports this shift for short-to-moderate term health gains.

Sprint Interval Training (SIT) consisting of 3 minutes of intense intermittent exercise per week improves insulin sensitivity, cardiorespiratory fitness, and skeletal muscle mitochondrial content to the same extent as 150 minutes per week of moderate-intensity continuous training (MICT) in previously inactive men.

If you are sedentary and struggle to find time for exercise, try Sprint Interval Training. Perform three 20-second 'all-out' cycling sprints per session, with 2 minutes of easy cycling in between, three times a week. This 10-minute session is as effective as 150 minutes of moderate jogging for improving your heart health, insulin sensitivity, and muscle energy capacity.