If you’ve ever wondered how to improve your grip strength, you should add a hand grip trainer to your exercise routine. Hand grip strengtheners are a great way to build forearm and wrist muscles through grip strength training techniques. While adjustable hand grips are often used for developing and exercising the lower arm muscles, hand grips are also a tool used for rehabilitation of the same muscle groups. Whether you’re looking to build muscle or rehab an injury, hand grip trainers are fantastic and portable exercise tools for any home gym.