Thanks for your post.
in muscles is common symptom after having any unusual physical activity after a long time. Your body muscles are not trained earlier to bear little more stress
so your body's system struggles to maintain extra blood circulation in active muscle. Numbness will fade away once you continue your same physical activities for next couple of days. Nothing to worry about, however you should check your Vitamin B12
levels if you are vegetarian or experiencing dyspepsia/indigestion