Good to know that you are still so active. The MRI
report that you have sent only indicates that one of the muscles in the rotator cuff
is slightly overworked. Supraspinatus is likely to get injured if the acromion is downsloping and impinging on it but in your case that does not seem to be the case. Yes the tendinopathy
indicates that the supraspinatus is strained and it requires rest. You have not told anything about the severity of your symptoms. incase you are having pain I suggest you start on suitable analgesics and give the gym a skip for 15-20 days. Avoid overhead activities and lifting weights.