There might not be any scientific evidence to back this up, but I can confirm these experiences. Beating off first thing in the morning is a good way for me to end up spending the whole day lazing around
If it doesn't have that effect on you, great, but if you find yourself to be lethargic and unmotivated try abstaining from masturbation for a while. You might find that it gives you the boost to proceed through life
I have posted about this before, but many years ago I was reading about Taoism and it's practice of withholding ejaculation. I also researched the kundalini awakening that supposedly could be achieved by abstaining from ejaculation. So I gave abstinence a go, but I wasn't only abstaining, I was fucking my girlfriend on a daily basis and stopping before I would ejaculate. My girlfriend at the time got really frustrated, it wasn't that I couldn't make her orgasm, which I always made sure I did orally or with my fingers but I realized she needed a sense of completion to the act, perhaps to make her feel good that she had pleased me. Anyway, I digress, I did this for more than a month, I became increasingly irritable and started to experience intrusive thoughts about sex (like when I was needing to concentrate at work), sometimes this put me in danger as at times I operated dangerous machinery.
After about a month I began to develop physical pain in the Perineum, and one time after a particularly intense fucking session, I left my girlfriends house for the 45 minute drive home and I experienced the most excruciating pain (some might call it a severe case of blue balls) and I had trouble driving home safely. I realized then that my little experiment had gone too far and what was needed was a more balanced approach. When I got home I knocked out a couple of wanks in quick succession and the relief was immediate. I then resumed masturbating whenever I felt the need. I see it a little like starving yourself, eventually all you do is think about food, there is no clarity of thought, a constant empty feeling and a deep yearning that causes insufferable pain. So not only did I not experience any extra mental clarity, spiritual wisdom or strength it was the opposite, It took away my usual focus and clarity.