I'm 14 years old and would like to start training to do triathlons in a few years time. I'm a strongish swimmer, ok at running, and a strong cyclist I try to cycle everday for at least 20 minutes. Could anyone give me tips on when to train and how long and how far to go with each part. I would really apreciate any usefull tips and comments . Iwould also like to know what food should i avoid when training.