I hadn't attempted windshield wiper abs in a good while when they popped up during a no-impact core workout I was trying on Instagram. Two reps was enough for me to remember exactly why this was one ...

Abs and summertime are like milk and cookies, Mork and Mindy, movies and popcorn. You get the picture. It's hard to have one without the other. There are many moves out there that work at the core by ...