H.E. Pennypacker the fake one wrote:
One mile of running = one mile of running.
And even that can differ. One mile in 5 minutes or a mile in 7 minutes during a long run?
H.E. Pennypacker the fake one wrote:
One mile of running = one mile of running.
And even that can differ. One mile in 5 minutes or a mile in 7 minutes during a long run?