13 fitness Challenge calendar ideas

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The 30-Day Burpee Challenge | Livestrong.com

The 30-Day Burpee Challenge | Livestrong.com - The 30-Day Burpee Challenge | Livestrong.com - 13 fitness Challenge calendar ideas
via: www.livestrong.com
Printable LIVESTRONG.COM 30-Day Burpee Challenge Calendar Burpees — the exercise you love to hate. But you’re never going to get better at them (or love them any more) if you don’t do them (funny how that works).