21 Day Abs Challenge - #workout #AbChallenge | Images Source: popsugar.com
I feel like I could start a few days in but I like how it's not a ridiculous amount of each exercise. Doable on s busy day
The saying goes that it takes 21 days to build a habit. So kick start your year with this 21-day HIIT challenge to get your heart pumping and torch fat! Get the workout here: http://paleo.co/21dayHIIT
This 21-day challenge takes minutes to do each day, requires no equipment, and is simple enough even for bodyweight-exercise newbies.
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