I get up at least 3-4 times each night, I'm assuming in between my sleep cycles. I'm completely awake for a few minutes before falling back to sleep. I don't

I get up at least 3-4 times each night, I'm assuming in between my sleep cycles. I'm completely awake for a few minutes before falling back to sleep. I don't have any problems during the day and don't feel tired. I always thought we needed 8 continuous hours, but some research I've read says it's okay to actually get up in between, as long as you get 8 hours total.