If you do endurance training or prolonged training, however, coconut water may not be the ideal fluid to choose.

FORBES: The Truth Behind The Coconut Water Craze

Although coconut water is rich in potassium, it is low in carbohydrates and sodium- two potential issues for those who do endurance training or prolonged aerobic workouts.

FORBES: The Truth Behind The Coconut Water Craze

"We obviously know we need to do a lot of physical training, a lot of stamina, endurance training... to get our physical ability up to standard, " said Abdulhussain.

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The American College of Sports Medicine recommends that endurance and strength training athletes consume higher levels of daily protein than the standard recommended daily allowance (i.e. 1.2-1.7 grams of protein for each kilogram of body weight, versus 0.8 grams per kilogram per day).

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WELLINGTON, New Zealand (AP) About 150 friends and family of Adam Strange wrote messages to him in the sand and stepped into the water Thursday at a New Zealand beach to say goodbye a day after he was killed by a large shark while training for an endurance swim.

NPR: Loved Ones Salute New Zealand Dad Killed By Shark

Are you training for strength or endurance?

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This can help you more objectively assess your cardiovascular fitness and determine optimal heart rate training zones for improving fitness and endurance.

CNN: Is it possible to 'top out' on cardio strength?

The prescriptions are tough vigorous exercise six days a week but they provide useful tips on the balance of exercise between aerobics and strength building, and the importance of interval training to avoid burnout and build endurance.

WSJ: Healthy Reader: 'Thinner This Year,' by Chris Crowley and Jen Sacheck

This should include vigorous (jogging) and moderate aerobic exercise (a brisk walk), as well as twice-weekly activities, such as weight training, which maintain or increase muscular strength and endurance.

BBC: NEWS | Health | Exercise 'must be tough to work'