I used to swim fairly regularly, once a week as part of a club (hey, that's regular in my books) and i stopped when i was about 14.. now, 3-4 years on i still go swimming every now and again. But i thought i'd better get myself into shape at somepoint so i wandered down to the pool and started doing some lengths.
I tell you, by the third length i was almost completely knackered
I'm not especially unfit - i do long distance walking just about every week (15-20 miles +), 30 mins walk there and back to college every day and my leg muscles are pretty good.
Any idea what's going wrong? I'm putting it down to not having done serious swimming in a loong time, but i'm not really sure. I really do want to get back into going regularly, purely because i find gyms rather opressive and as i have some weights and an exercise bike at home - why pay for it
EDIT: haha maybe sorting out these late nights will be a good starter