Dear Practo User. Masturbation is a perfectly normal and harmless activity. Regular masturbation does not cause loss of erection. The loss of erection is due to your weak Abs, weak pelvic muscles and weak gluteal muscles. You can strengthen these muscles by regular exercises which are specifically designed for them.Your loss of morning erection could be due to decreasing testosterone levels.Our Team of experts at Dr. Monga Clinic can help you through Pre-Paid telephonic consultation followed by an exercise regimen which will be sent by E-mail. Thank you for your query. And you may also visit us at our website. www.drmongaclinic.com