Core exercises like side planks, hollow holds, and straight leg-toe touches can help tone your abs. Reducing belly fat can be challenging because the volume of belly fat is heavily dependent on diet.

Stop waiting for the "perfect" gym routine to start your fitness journey. Experts reveal that simple, repeatable home programs are the most effective way to build muscle and longevity.

Core training has always been part of military PT and fitness testing. From crunches to sit-ups, flutter kicks, leg tucks and plank poses, the U.S. military uses many exercises to test core strength.

And why boxing is so good for women over 50, straight from Geri's coach ...