I am trying to learn more about training and really want to improve. I am gaining a lot of knowledge for other threads but do not understand exactly what training zones are. Could someone define L2, L3, L4, etc. Thanks.
I am trying to learn more about training and really want to improve. I am gaining a lot of knowledge for other threads but do not understand exactly what training zones are. Could someone define L2, L3, L4, etc. Thanks.
I am trying to learn more about training and really want to improve. I am gaining a lot of knowledge for other threads but do not understand exactly what training zones are. Could someone define L2, L3, L4, etc. Thanks.