( this gets you the best and longer time but can be a challenge for some) You will feel it and may be painful but in a great way!
A sports massage in my office is with a relaxation massage first, then goes into more deep tissue, this helps the body relax so we can do some stretching of the Arms, shoulders, legs, hip flexors, and or all other movements in the body. This doesn't tend to hurt but I do say this we do reach a point of the stretch that you wouldn't normally get on your own. It's quite amazing realizing how much you can actually push yourself into a stretch with my help. This massage also helps get rid of many tight areas, and loosen up the tendons and muscles.