The Maintenance Library - Primal Law#5 Sprint once in a while

03-20-2010, 09:47 AM
This concept is quite popular and nothing new to adherents of HIIT.
It isn't about speed, it's about effort. Push yourself ... for short bursts.

03-20-2010, 11:05 AM
And, it's fun!

03-20-2010, 03:00 PM
It's funny, sprinting can feel just like playing. Like when we were kids. It's kinda neat.