Swimming as exercise
I am 67. I have been swimming a mile 3 or more times a week for a few years. It takes me an hour., and I really enjoy it The muscles in my arms have improved and my gut, which used to be flabby, has hardened up, but my physique remains unchanged. After reading through this thread, I have gone out and bought a set of resistance bands. I intend to continue my swimming while I use them.
BTW. Johnny Straws, a well known trainer, is selling the bands for $10, plus $9.95 shipping