Im constantly exhausted. I can barely handle getting dressed/ready for the day without feeling sleepy. I know it's probably because of me becoming a shut-in for the past 4 months (cause of constant anxiety) and barely doing anything anymore, but I just wonder WHY this is happening? 
People say if you get up and start moving youll feel more energized if it's due to mental health. So I try that, but end up crashing and feeling like I need a nap halfway through the day. All I can think of is that because I'm so used to not doing much, when I finally DO stuff, it makes me extra tired? Would doing stuff more often help increase my energy over time?