massaging / deep tissue / cupping stimulates the nerves/tendons/joints. stretching has many benefits to this also which works simultaneously.
If it wasn't for my physio, I would be hardly walking, especially after a bad squat injury and 2 days later a car crash. Yes stretching , pressing the right trigger zones can accurately/ effectively contribute in the repair of most common sporting physical injuries.
Don't knock it till you try out! no harm in trying