Cross training should be a prominent part of any runner's overall training program. In simple terms, cross training refers to any sport or activity that is gonna be train, or condition, different muscles groups than your "main" sport. Or, cross-training can condition the actual same muscles groups, just in a different manner.
I know this as the 90/10 rule. I eat rather strict diet about 90% of the time, but the other 10% I be a cheater. Never having ice cream, or drinking alcohol, or…
Doorgaan