I've had anxiety off & on for years, and now it's on. I'm wondering if this utter exhaustion is part of it. I've been waking up almost every night with adrenaline rushes, nausea and my heart racing. Went to cardiologist & everything checked out fine. I used to be athletic and active, but lately, even if I don't do much of anything, I get SO tired I feel like I could literally collapse. I have to lay down and sometimes I start to panic because of how weak I feel. I don't understand why I feel this bad. When I get like this, my eyes also feel tired & irritated. I don't have the energy to do my normal chores. Weeds are taking over my garden. My family needs me back. Can stress/anxiety cause such exhaustion? Anybody else get this?