question about allan wells training

[Thor]

@Youngy

The use of the speedball for sprint training get’s criticised a bit, but I take it with a grain of salt.

I remember Wells himself saying that he would have changed the speedball training a bit where he to do it all over again. As I recall he attributed some tightness in the upper-back/shoulders to this training. Of course, he could have simply meant that he overdid it at certain times and not in general.