I visited the local swimming pool today with my sisters. The majority of the time I was kneeling on the floor of the pool and supervising them. When I was in the pool I didn't feel as though I was doing much (if any) exercise, though on the way home I felt as though I'd done a lot more than usual. My muscles didn't ache but I felt very drained of evergy and rather hungry.

Can anyone explain why this happened?

Thanks in advance.

I train 10 times a week as a competitive swimmer but I have thee weekend off. When I return on a Monday Morning I feel really bad. I also build up a lot of lactic acid during the week in the pool as I am quite muscular.

Why is it? and could someone suggest some ways of helping me? thanks.