Why science and experience is different about mastrubation ?

Science says that dopamine drops after mastrubation and return to baseline within few minutes. But for me it takes about 48 hours to feel baseline. After mastrubation I feel mental fatigue which takes about 48 hours, I clearly feel transition of my brain from low, overthinking (not related to mastrubation) to baseline. Let me tell you that I consider mastrubation as natural process and I don't feel any guilt. I am just curious that is anyone else feel like this ?