Improving on swimming stamina - how do you do it???
I used to swim competitively when I was a kid till about high school, then stopped. I'm just now getting back into it, and trying to swim more often. But my stamina is TERRIBLE now :( :( I come up breathing so hard after just 100m, and I have to rest about 1 min before being able to do another 100m. I haven't a clue what…
