Gym ball exercises are the underrated Pilates alternative. They challenge the core, shoulders, arms, and back in a similar way and use a versatile fitness essential. I love a Pilates workout at home.

Nothing will humble you like an exercise ball. Working with an exercise ball can also help you improve your sense of your body in space, a.k.a. proprioception, Jeffers explains. “Stability ball ...

It combines passive stretching with active mobility work ...

There are so many effective ways to work your core at the gym and at the home. You could grab a kettlebell and do a full-body routine with sneaky abs engagement, do bodyweight abs moves like plank ...

Add Yahoo as a preferred source to see more of our stories on Google. Targeted back workouts also help create a V-taper physique: Wide shoulders and a broad back that narrows to a smaller waistline.

Arm day, leg day, ab day—these are the familiar pillars of strength training. But what about lower back day? Our lower backs are often overlooked, yet they're a crucial part of fitness. Many of us ...