Soak up some overdue vitamin D while strengthening all your major muscles ...
This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. FOX 4’s Karli Ritter and fitness trainer ...
a) Assume the high plank position with your arms straight, bring one knee up to the level of your elbows. Higher... b) Draw your leg back down, then do a full push-up. And now the other knee ...
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