Definition: "An ergogenic aid is any substance or phenomenon that enhances performance "
Training is more fun with a bottle of water
You can make lengthy running or cardio sessions more pleasant by drinking water while you're exercising. Drinking water also helps you feel more energetic after the training session, write sports scientists at Loughborough University in Appetite.
The researchers alternated the sessions, so the subjects drank water [FR] or didn't [NR]. Before starting the training the test subjects in the FR group drank 5 ml water per kilo bodyweight. After the training session they drank 2 ml water per kilo bodyweight every twenty minutes.
The researchers then asked the athletes how much they'd enjoyed or not enjoyed the running, and drew the curves shown below from their findings. The higher the curve, the more pleasurable the athletes found their activity.
The researchers also asked their subjects how excited, calm or tired their were. That made no difference. But when they asked the athletes how energetic they felt, the researchers found that drinking water had had an effect.