Strengthen Your Core, Butt, and Legs With This Weighted Squat Series From Jennifer Garner's Trainer

by Jenny McCoy

"The below instructions explain how to do the moves with a box and weight, though as mentioned, you can ditch the weight and do a regressed version of these moves as on-the-ground reverse lunges, suggests Brewer.

If you are using a box, start with one around 6 inches in height, recommends Brewer. The taller the box, the more difficult the moves will be. If you don’t have a box, you could use a stair or even a thick book, Brewer adds. When picking a weight, start light. “Because it’s a core exercise and involves balance, you don’t want to jump in with a heavy weight and throw off [your form],” he explains. De La Rue uses a 10-pound kettlebell, though you may want to go lighter or heavier based on your fitness level.