Does not masturbating = low testosteroneWatch this thread
I go gym nearly everyday and do the compound movements which are meant to increase hormones anyway
18 year old male
In theory, no masturbation = more testosterone. The idea behind that is research suggests your testosterone levels increase every day you refrain from masturbation, reaching a peak on the 7th day (40%-ish increase) and then cycling through again. I believe athletes have refrained from masturbation in the past for this very reason. Other theories included increased confidence, self-esteem, muscle growth and drive. In comparison, masturbation frequently (especially with porn) can lead to addiction, low self-esteem, depression etc. If the NoFap community is to be believed, then not having any sexual emotions is what they call a "flatline" which is a brief period of basically being disinterested in sex. It should pass.
It could be medical reasons as to why you feel this way, so I suggest seeing a doctor. It could be low testosterone for another reason, or it could be something else entirely.