I'm in my late 30s, and physically healthy. Mentally, I can function better on low sleep than I could in my 20s. But two weeks ago, I had five nights in a row o

I'm in my late 30s, and physically healthy. Mentally, I can function better on low sleep than I could in my 20s. But two weeks ago, I had five nights in a row of 4 hours of sleep. By the end of the week, I ended up in the hospital with chest pains and doctors were concerned it was a heart attack. In the end, things checked out fine, but my body definitely can't handle the stress of lack of sleep like it used to.