The humble jumping jack holds its own as one of the top no-equipment exercises. Whether kicking off a warm-up or capping a cardio session, this classic move gets the job done. Don't let its old-school ...

FITBOOK author Nina Ponath loves challenges—this time: 10 days of jumping jacks. Photo: Getty Images / Antonio_Diaz; Collage: FITBOOK Jumping jacks in all variations—FITBOOK author Nina Ponath did at ...

SCHENECTADY - Staffers at the Schenectady Center participated in the system-wide annual jumping jack challenge in observance of National Heart Month. Jumping jacks can significantly elevate an ...

Jumping jacks in all variations–FITBOOK author Nina Ponath did at least 200 of them every day for 10 days. Here, she shares how it made her heart leap and why she almost gave up. Most of us remember ...