john sifferman

The “Beg For Mercy” Extreme Fitness Workout, and why I dare you NOT to do it

Truly extreme fitness workouts are few and far between. Most workout programs don’t even entertain the notion of extreme fitness and are often designed to convince wimps that they’re working harder than they really are. These wannabe workouts are common among personal trainers who are worried that their clients may injure themselves while under the

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