For The Last Few Months I Have Been Experiencing Some

For the last few months i have been experiencing some weird stuff. hands, fingers, legs feel stiff, it makes it hard to make a fist, it's worse when sitting down or being inactive for awhile. I have tremors in both index fingers, my ring finger and middle finger middle joints are always painful, i have random twitches throughout my body, mainly calves, but they pop in other places. If i hold my leg out or arm out, they kind of bob up and down but don't drop. My balance isn't as good anymore, i don't fall, but it's not as good as it was. If i use my muscles in anyway, they shake, my teeth has a chatter to them that i can feel when i put them together but you can't see it. I can still lift everything, heavy weights etc, etc.