Sports Nutrition Frequently Asked Questions

Hydration needs depend on exercise intensity, duration, climate, and individual factors. A general guideline is to drink 400-800ml of fluid per hour during moderate to intense exercise lasting longer than 60 minutes. For sessions under an hour, water is typically sufficient. During longer activities, sports drinks containing 6-8% carbohydrates and electrolytes can enhance performance and fluid absorption. Weighing yourself before and after exercise can help determine your individual sweat rate—aim to lose no more than 2% of your body weight during training. Post-exercise rehydration should include 150% of fluid lost over the next four to six hours.

Pre-workout nutrition should focus on carbohydrates and moderate protein while keeping fat and fibre relatively low to avoid digestive discomfort. For meals eaten 2-3 hours before exercise, combine lean protein with complex carbohydrates—such as grilled chicken with brown rice or salmon with sweet potato. For snacks 30-60 minutes before exercise, opt for easily digestible carbohydrates like bananas, oatmeal, toast with honey, or energy bars. Include about 10-20g of protein if possible. The timing and composition matter because they provide sustained energy and prevent blood sugar crashes during your session. Individual tolerance varies, so experiment during training to find what works best for your body.

Post-workout nutrition is crucial for supporting muscle repair, replenishing glycogen stores, and enhancing adaptation to training. Within 30-60 minutes after exercise, consume a meal containing both carbohydrates (1.0-1.2g per kilogram of body weight) and protein (0.25-0.40g per kilogram) to maximise recovery. This window is sometimes called the "anabolic window," though recovery benefits extend several hours post-exercise. A chicken and rice bowl, Greek yogurt with granola, or a protein smoothie with fruit are excellent post-workout options. Proper post-workout nutrition supports muscle protein synthesis, reduces muscle breakdown, and prepares your body for the next training session.

Micronutrients—including vitamins and minerals—are essential for energy production, muscle function, immune support, and bone health. Iron supports oxygen transport and energy metabolism, making it particularly important for endurance athletes. Calcium and vitamin D strengthen bones and support muscle contractions. Magnesium aids muscle relaxation and energy production. B vitamins facilitate energy metabolism, while antioxidants like vitamins C and E help manage exercise-induced oxidative stress. Zinc supports immune function and protein synthesis. Rather than relying on supplements, aim to obtain these nutrients from whole foods: lean meats, leafy greens, dairy products, nuts, seeds, and colourful fruits and vegetables. A balanced diet typically provides sufficient micronutrient intake for most athletes.

Sports supplements are not necessary for all athletes. A well-structured diet covering your macronutrient and micronutrient needs should be the foundation of your nutrition strategy. However, certain supplements may offer benefits in specific situations. Whey protein powder can help athletes meet daily protein targets conveniently, particularly for those with high requirements. Creatine monohydrate has strong research supporting modest improvements in strength and power performance. Carbohydrate-electrolyte sports drinks help during endurance events lasting over 90 minutes. Before considering supplements, assess whether your baseline diet is optimised. Consult with a sports nutritionist to determine which, if any, supplements align with your individual training goals and dietary gaps.

Intense training temporarily suppresses immune function, increasing the risk of illness. Proper nutrition strengthens immune defences during heavy training periods. Adequate carbohydrate intake maintains immune cell function and helps manage stress hormones that suppress immunity. Sufficient protein supports antibody production and immune cell development. Antioxidant-rich foods—berries, citrus fruits, leafy greens, nuts—help manage inflammation from intense exercise. Zinc from meat, shellfish, legumes, and seeds is essential for immune cell function. Vitamin D, obtained from fatty fish, egg yolks, or sunlight exposure, supports immune regulation. Sleep quality, stress management, and hygiene practices complement nutritional efforts. During heavy training blocks, prioritise eating enough calories and maintaining diverse whole foods to support both performance and immune resilience.

Weight management requires balancing energy intake with expenditure while maintaining performance and lean muscle mass. Create a modest calorie deficit (300-500 calories per day) rather than dramatic restriction, which can impair performance and recovery. Prioritise protein intake—aim for 1.6-2.2g per kilogram of body weight—to preserve muscle tissue during periods of reduced calorie intake. Focus on nutrient-dense whole foods that support satiety: vegetables, fruits, lean proteins, whole grains, and healthy fats. Spreading meals and snacks throughout the day helps manage hunger and maintains stable energy levels. Avoid eliminating entire food groups, as restrictive approaches often lead to poor adherence. Time calorie reductions around low-intensity training days rather than hard sessions. If significant weight changes are needed, work with a sports nutritionist to develop a sustainable plan that supports both your athletic goals and overall wellbeing.

Nutrition needs vary throughout your training cycle. During high-intensity or high-volume training blocks, increase total calorie intake and carbohydrate consumption to fuel sessions and support recovery. Strength-focused phases benefit from higher protein intake and adequate calories to support muscle development. Lighter training phases allow more flexibility—you might reduce carbohydrate intake slightly if training volume drops, though protein remains important for tissue maintenance. Peaking phases before competition may involve slight carbohydrate loading 2-3 days prior, depending on the sport. Off-season periods offer time to refine dietary habits and address nutritional gaps. The key is matching nutrition to your training demands and adjusting systematically as your programme changes. Track how you feel, perform, and recover to guide adjustments rather than using generic protocols.

Muscle development requires adequate protein, total calories, and consistent resistance training. Excellent protein sources include chicken breast, lean beef, fish, eggs, Greek yogurt, cottage cheese, legumes, and plant-based options like tofu and tempeh. Carbohydrates fuel training sessions and support recovery—prioritise whole grains like oats, brown rice, quinoa, and sweet potatoes. Healthy fats from avocados, olive oil, nuts, and fatty fish support hormone production and nutrient absorption. Include micronutrient-rich vegetables and fruits for vitamins and minerals that support muscle function and adaptation. A practical approach involves building meals around a palm-sized protein source, a fist-sized carbohydrate serving, and a thumb-sized healthy fat portion, plus vegetables. This framework ensures balanced nutrition while supporting your strength training goals.

Endurance athletes require particular attention to carbohydrate availability since sustained aerobic exercise depletes glycogen stores. Daily carbohydrate intake should be 6-10g per kilogram of body weight, distributed throughout the day to maintain energy for training. During endurance events lasting over 90 minutes, consuming 30-60g of carbohydrates per hour (from gels, sports drinks, or real food) maintains blood glucose and delays fatigue. Adequate protein supports muscle repair from high training volumes—aim for 1.2-1.6g per kilogram daily. Hydration remains critical for thermoregulation and performance maintenance. Healthy fats provide energy density and support recovery. Importantly, practise race-day nutrition during training to identify what your digestive system tolerates at competition intensities. Individual responses vary significantly, so personalised nutrition planning through race simulations and training experimentation is essential for endurance success.

Effective recovery nutrition encompasses multiple components beyond the immediate post-workout period. Consume carbohydrates and protein within 60 minutes of finishing exercise to initiate muscle repair and glycogen restoration. Throughout the day, maintain consistent protein intake distributed across meals to support ongoing muscle protein synthesis. Include anti-inflammatory foods like fatty fish rich in omega-3s, colourful fruits and vegetables containing polyphenols, and herbs like turmeric. Stay adequately hydrated, particularly on consecutive training days—monitor urine colour as a practical hydration indicator. Prioritise sleep duration and quality, which directly impact recovery hormones and protein synthesis. On high-volume training days, increase total calorie intake to match energy expenditure. Include micronutrient-rich foods to support inflammation management and adaptation. Recovery is a holistic process—nutrition works synergistically with sleep, stress management, and intelligent training programming to enhance adaptation and prevent overtraining.