forty percent rule

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Tag archive for forty percent rule

Endurance And Stamina For Gym Ownership

Owning A Gym Probably Will Not Kill You Spartan Race exhorts you to push harder! So says Joe De Sena who we have covered in the past and presently has a new book in print. Spartan is the endurance fitness event company that is De Sena’s brainchild; he’s a believer in finding the edge of exhaustion, and then to start doing some real training. Endurance events provide a test that few other things in life can do safely. There are plenty of things that will test your endurance unsafely; war zones, being lost alone in the wilderness, but I think [...]

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