Far too much food. Is it's all a mystery.
Chap I feel the same, I feel like noticing these things makes them happen,moods especially, and its a self perpetuating thing to a certain extent, and while I only used to worry about going low, now I worry about being too high. As a teen and young adult any time I started losing touch with reality and not sleeping and getting agitated it was always dark and horrible and nasty and so I was very keen to get help/treatment (mostly, unless I was scared people were in on it) but with the supposed hypomania I had a few months ago, TBH it didn't feel like help was needed or anything that I might possibly want, because why would you, and it scares me that a mental illness could be happening without me noticing or realising I needed help, so iconstanyly poke at my self mentally now to check, and worry slightly that I'm a little too high up at the moment on the dose of antidepressant I take while fearing the consequences of reducing (as depressive symptoms started appearing when I tried to go below the current dose I'm on). I'm also not keen on augmentation therapy because of the interactions and enhanced side effect profiles and general potential for unintended effects and multiplicative effects on say weight, but also don't want to stay on the phenelzine alone as my weight is inexorably increasing it seems 
but at the same time, a truly mentally normal person would just notice they felt dancey and energetic and productive and competent and think "ah, good" rather than "hmm, am I being normal?"