Navy SEAL-designed bodyweight workouts using suspension straps for total conditioning. Build strength, balance, and core ...
Joseph David, a New York City based trainer, claims that best way to build core strength is by doing crunches.
The 7-minute workout, created by exercise physiologist Chris Jordan, is a high-intensity circuit training (HICT) routine, ...
How many crunches can you do — and how does that stack up with others your age? That was the question posed by "FOX & Friends" on Monday, when fitness expert Joseph David challenged hosts Brian ...