I’m new to this site and was wondering if someone could advise

After exercise (running) I’ve been left with a lot of weakness in my calf muscles (making it difficult to walk) and arm muscles ( so weak, everything I pick up is heavy) I’m not sure if this is due to low carbohydrates or protein and was wondering if anyone had any tips to regain strength?

Also how long on average does it take to regain strength in muscles?
Are there any supplements that could help? 

Thank you for your time, I appreciate any advise