Posts Tagged ‘interval training’

12 Days Fitness Challenge Workout 21 – Interval Interlude

Your mission: Complete twelve workouts between December 1st and January 1st If you’re a Performance Fitness member these twelve workouts can be any combination of personal training sessions, group training classes, a DIY workout from the Performance Fitness Exercise Guide (don’t have a PFit Exercise Guide? email us and get one!), a WOW, or one…

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