Comment by block_dagger

I have severe sleep apnea as well as insomnia. I may also be a multi-phasic sleeper. In any case my average sleep per night is ~3.5 hours with only ~1.5 hours of deep sleep. I use light therapy, CPAP, medications, etc but none of it solves my problems. I started taking creatine daily a couple of months ago. I've noticed a significant uptick in my cognitive abilities, despite being constantly sleep deprived. TFA doesn't touch on this apparent benefit of creatine, so thought I'd mention it for others who might be suffering from similar sleep issues.