Suggest Treatment For No Strength In Nerves After Lifting Weights

My sister is 28yrs old and from a months time she feels as if no strength in her nerves.. she feel very tired in lifting little heavy stuff like water bucket and she sense the nerve flickering in her leg & arms.. because of this she is too down. please suggest any home remedy or does physiotherapy gives good results or any ayurvedic treatment.. Pl advice the best for her. Thanks in advance