I wanted to ask if by injeting 500 mg/week of sustanon into my glutes, am I damaging the muscle by only shooting in the glutes. Do I have to inject in other areas such as arms or quads. Also, what size needle would I need for quad shots. Thanks.
no its ok, just rotate each time, inject only in one spot once a week to allow it to heal. You can hit the left side on monday and the right side on thursday and follow the pattern, allowing 7 days rest for tissue to recover