Hi,thanks for query.Unless you have done some vigorous activity which can hurt,muscle tearing is not possible.What you might be having is muscle pain
due to inactivity period that you had.Do not worry about bumps,start working gradually and then built up time.Do some light message after exercise for having good circultion.Tingling
that you are having may due to some odd nerve irritation
.At your age I do not see any major issue.Take plenty of liquids and fluids rich in potassium as its deficiency can lead to this.
wishing you good health.