In a discipline that sometimes feels like you’re living a Zen koan — the problem with, say, your legs might actually be caused by your arms — you don’t just need practice. You need really high-quality practice. Good practice makes you more efficient so you glide to the other side; you don’t just get there (exhausted) through a lot of splashing and sheer determination.

And that’s where GoSwim.tv comes in. Their amazing videos, like the one here that helps you improve your catch, all cover why do it, how to do it and then — the genius play — “how to do it really well.” Beautifully executed every time. Like your swim stroke will be, if you watch, note, and practice.