The foam roller is used for self-myofascial release, a technique that helps relieve muscle tension, pain, and inflammation, while also increasing joint range of motion. It is popular in fitness and physiotherapy settings due to its effectiveness in muscle recovery and improving flexibility. You can use the roller before your workout to warm up your muscles, after your workout to stretch and relax your muscles, which aids in faster recovery, or even daily for massaging sore and tight muscles to reduce pain and increase mobility.