Is not jumping out of bed anymore a sign of something or just part of getting older?

two things to consider that might lead to improvements: sleep apnea - as other have suggested sleep apnea (airways becoming partially or temporarily blocked during sleep leading to shallow or frequently interrupted sleep) can cause persistent tiredness and grogginess as you're essentially sleeping less than you think you are, and are constantly disrupting the sleep cycle mentioned below. Can also cause frequent headaches and migraines as it get worse, and is implicated in strokes down the line. Worth looking into as by your description it seems lightly. sleep rhythms - your sleep happens in cycles of depth of 45 mins and and hour and a half ( when plotting sleep depth over an hour and half on a graph it forms an M shape, where the sleep depth is shallowest at the ends of the M and less deep at the middle point of the M, 45 minutes into the cycle ). Waking up during the shallow sleep at the end of one of these cycles will allow you to wake up much more easily and become alert quicker. For example, sleeping for 7.5 hours (with 15-30mins given to fall asleep), so you've completed 5 full hour-and-a-half cycles, will be much more refreshing than sleeping for 8 hours, which would cause you to be woken mid-cycle, while you're in a deeper sleep state. Its better to stick to the hour and a half cycles (3hrs, 4.5hrs, 6hrs, 7.5hrs etc) but using the 45 minute waking opportunity can be useful too in a pinch. (3hrs45mins, 5hrs15mins, 6hrs45mins etc). I've had problems with sleep quality since I was a teenager and getting on top of these two things was a game changer. Now if only I could sleep before 4am and fall asleep in under 1-4 hours during the summer.