I think some of it is nerve stuff because my left leg is always kicking when I try to relax... but mostly I'm just not in shape from not working for a year. They closed all the restaurants except for skeleton crews for pick up only, and I got out of shape. Now I work 6 days a week. I went from nothing to OMG I'm sooooo tired... lol I think it's a combo... Hanging upside down actually sounds so good.
This last year was hard on me too. I gained a few pounds because of the Covid Stress.
Get a glucose meter and monitor your morning blood sugar. First your morning blood sugar goes up but you don't even feel it. Then your legs start twitching and feeling a little off. It happens so slowly its easy to not even notice till its a real thing, but then its too late to easily solve the problem. If you catch the problem early you can make changes in your diet to keep your blood sugar under control and avoid a lot of problems like cardio vascular disease, leg pain, obesity, all the things that eventually get you as you age.
I paid $14 for my monitor at Walmart. You will need a lance and lancets and strips. About $30 total. You don't have to check every morning. Once a month, unless you find something wrong. A 20-40 year person should be under 100. Mine was 175 when I started monitoring. Its now about 105-110 and for my age that's ok.
Its simple and it can save you years of pain.