The Live Infinitely Exercise Ball ($32) comes in a 95-centimeter size, making it a massive exercise ball in comparison to most. Bigger isn't always better, but then again, sometimes it is.

Ever the fitness enthusiast, Khloé Kardashian, who's 7 months pregnant, recently wrote an ode to an arm exercise she practiced before getting pregnant: push-ups on a Swiss ball.

The trouble is, the ball only works if you sit up straight—which most people don't. Dr. Nick Shamie, an associate professor of spine surgery at the University of California, Los Angeles ...

The huge, bouncing ball makes an excellent landing gear, able to launch off lumps and bumps and even skim over water. We’ve seen [FliteTest] get up to other escapades in the past, too.

Another table is surrounded by child-sized bouncy chairs — exercise balls inserted into wheeled chairs. There are Hokki stools that wobble, a couple of webbed bungee chairs and bean bag chairs.

One ball is "dead," or barely bounces. Another is soft and big, 12 inches around, with good bounce. The third is smaller and harder but still bounces.

Mena, a Challenger Elementary first grade teacher, began using exercise balls as chairs last school year when it was first suggested to her. “I had a student who was having a difficult time ...

Whether students or adults are sitting on traditional chairs or using core strength to balance on exercise balls, she said, everyone needs to stand and move around after 20 to 30 minutes of sitting.

Exercise Balls Bounce Into Garland School More than 500 students, teachers swap chairs for exercise balls By Tammy Mutasa • Published April 1, 2013 • Updated on April 1, 2013 at 10:16 pm ...