After much experimenting I've found much less than 6.5/7 hours a night and I'm definitely not at 100%. Similarly, much more than 8 and I'm not at 100% either. O

After much experimenting I've found much less than 6.5/7 hours a night and I'm definitely not at 100%. Similarly, much more than 8 and I'm not at 100% either. One offs are fine, but I try and stick to this as much as possible. I try and exercise every day - I'm not sure whether that equates to me needing more or less sleep, but again, without the exercise I never feel I'm at 100%. Meditation also helps me greatly. This definitely hasn't always been the case - I'm late 30s. In my 20s, less sleep (or working after drinking, etc) was very much doable. Or maybe I just care more / notice it more. OP, I'm all for getting stuff done, I appreciate we're all (very!) different, and definitely I'm not trying to mother you(!), but just keep an eye on yourself and your health. Burnout creeps up quickly. Have been there more than once and it's miserable.