A reverse hyperextension machine, also known as an RH machine or a reverse hyper, is an exercise machine that provides spinal decompression and strengthening of the posterior chain muscles — erector ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." THE BACK extension, that time-tested move for building back strength, has been around the block. But here ...

While muscle groups like the chest, biceps, and glutes tend to get an abundance of attention, no strong physique is complete without a well-developed back. All too often, however, we overlook back ...