Are crunch machines at the gym safe? – Quora. They are relatively safe , in that they only move in a fixed path. There isn’t much room for error, slipping, etc. on many of the ab crunch machines at most gyms.3 Tem 2019
Are crunch machines at the gym safe? – Quora. They are relatively safe , in that they only move in a fixed path. There isn’t much room for error, slipping, etc. on many of the ab crunch machines at most gyms.3 Tem 2019