It has nothing to do with masturbation
Two reasons for this problem.
1. Getting bored with same positions.
2. Any diseases like Diabetes
1. Try new positions, new locations.
2. Do a lot foreplay
3. Control Diabetes / change medicines for Hypertension if you have these
Better consult a Sexual Medicine Expert in your area
Dr A CHAKRAVARTHY,
Consultant, Sexual Medicine,
99464 25577 / 94477 05077