SWIMMING NUTRITION TIPS
Swimming requires a commitment to training on the level of
an endurance sport, yet most of the events themselves last
less than a few minutes. Even the 1500 metres, the Olympic
distance event, only takes 14–18 minutes for world-class
swimmers to complete. Compare that with a typical training
day for a competitive swimmer, who may do a 2-hour pool
workout in the morning, another 2 hours after class, plus
dry-land resistance training multiple days in a week. Olympic
champion Michael Phelps trained for 6 hours daily leading up
to the Beijing games and required upwards of 10,000 calories
per day! You may not be a Michael Phelps just yet, but if
swimming is your sport, you’ll benefit from a performance
nutrition and hydration plan that not only meets the arduous
demands of high-volume training but also enables you to be
fueled, hydrated, and comfortable throughout meets. Applied
strategically, sports nutrition can help you maximize the
gains from your training and achieve your very best
during competitions.
Elite competitive swimmers typically train in the pool twice daily for
90 minutes to 3 hours at a time. With roughly 6–12 sessions per week,
athletes generally swim 30–70 km over the course of a
training week. Calorie needs vary based on training demands, but typical
intakes are 3,000–6,000 per day. Pool workouts often consist of aerobic
warm-ups and cool-downs; drills to perfect technique and to practice
elements of a race such as starts, turns, and touches; and intervals of
swimming at varying intensities, for varying lengths of time, and with
varying amounts of time for recovery. The goals of all this training are to
develop conditioning, to perfect technique, and to refine racing strategies.
Time in the pool is frequently augmented by dry-land training, including
stretching, flexibility work, and resistance-training workouts 2 or 3
times per week. Some swimmers also add cross-training to the mix. For
example, cycling or running may be part of your weekly regimen in order
to further improve conditioning, help control body weight, or drop body
fat. In total, elite competitive swimmers often train 20–30 hours every
week. School or club swimmers put in somewhat less time, but the fact is
that high-volume training is a formidable physical challenge. Nutrition is
critical to meeting the demands of training, and falling behind nutritionally,
even for a few days, can seriously undermine your ability to train and
compete. Swim competitions present another challenge: The events
themselves are relatively brief, but meets can span a few days to over a
week. Here, the sports nutrition focus is on being hydrated, fueled, and
comfortable for each event.
The three most important principles of sports nutrition for swimming are
to stay hydrated; to provide fuel for your muscles; and to promote optimal
recovery after practices, workouts, and swimming events. Apply these
principles correctly, and you can maximize the gains from your training
and perform at your best in the pool.

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BEFORE YOUR SWIM
START HYDRATED
- Start hydrating 24 hours prior to your run/race
- Check urine color: Lemonade color = well-hydrated; apple juice color = drink more fluid
- 2–3 hours before exercise: Drink 400–600 ml of water or sports drink
- During active warm-up: Drink another 240 ml — about 8 gulps
WHAT AND WHEN TO EAT
- Focus on carbs
- 2–4 Hours before a run/race meals should be high-carb, moderate protein, low-fat, and low-fiber
- Check urine color: Lemonade color = well-hydrated; apple juice color = drink more fluid
- If you have more time before a run/race (4 hours) eat more; if you have less time (2 hours) eat
less to avoid stomach distress
- Eat a high carb snack 30-60 minutes before a run/race to top off fuel stores
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DURING YOUR SWIM
STAY HYDRATED AND FUELED
- Between sets or races, drink 120–240ml of sports drink every 15–20 minutes
per hour (for exercise >2 hours) to help delay fatigue and improve performance
- Be sure to get 30–60 grams of carbs per hour (for exercise >1 hour) or 45–90 grams of carbs
per hour (for exercise >2 hours) to help delay fatigue and improve performance
- Drink up: Dehydration is common for swimmers
- Have easy-to-digest carbs between sets or races
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AFTER YOUR SWIM
RECOVERY STARTS AS SOON AS YOU FINISH
- To start your muscle recovery, consume foods/fluids with carbs and protein within 30 minutes after exercise
- Graze on a series of snacks/beverages every 15–60 minutes in the early recovery phase
- Sports drinks, protein bars and recovery shakes make convenient and portable recovery foods
- Be prepared! Pack snacks in your gear bag
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