Without a coach and enough knowledge about how to take care of myself, I got injured and started to swim (breaststroke) to keep fit.

由于没有教练以及不甚了解如何照顾自己，我受伤了，开始游泳（蛙泳）来保持健康。

youdao

When I began lifting weights, I got injured so often I might as well have simply beaten myself about the head and face with a barbell.

当我开始举重锻炼时，受伤之频繁，差不多等于在用杠铃敲自己。

youdao