To diagnose a problem with the port, try using a different battery and cord for a while. Damaged Power Cord. The power cord is a wire inside a plastic sheath, and the wire can break with or without damage to the sheath. If the power goes on and off as the cord is moved or bent, the wire is likely broken.
You can work out if you're sore. Don't exercise the same muscle groups that are hurting. Do legs one day and exercise your upper body the next. By doing so, you'll still be able to get exercise and allow your lower body to recover and rebuild.
If you want to workout 5 times a week then compile a list of 30 functional full body exercises and do 6 exercises each day. If you want to hire a trainer at your local gym for a session then do that and ask them for a list and have them show you how to do it. Rule #3: A little soreness and a little grit is good.