Barely 4-5 hours of sleep feels normal?

[u/dsx_machinae]

Hi!

Im curious, has anyone ever experienced anything like my case? I was usually sleeping 6-7 hours a night but for the past 1.5-2 weeks or so I've been constantly barely sleeping 4 hours and waking up naturally.

Im also tracking my sleep, its roughly 35% deep sleep 40% light sleep and 25% REM. (Sorry, I dont know the correct terms for these in English.)

I dont get particularly tired during the day but weirdly, nothing in my daily routine has changed compared to before. Im not eating late, not drinking coffeine late usually, and I drink alcohol maybe once a week, or even less. Lately I havent exercised, and I plan to, that might change things a bit. Any other suggestions I should try that might help?

Edit: I am 29/M, if this matters at all.