Hello, If it is a mild shock not passing through heart no need to worry. Check for other possible causes for weaknesses like depression or electrolyte imbalance or hypothyroidism etc. Do regular exercise and yoga. Avoid alcohol and spicy food. Eat green leafy vegetables and fruits. Use tablet Levocarnitine twice a day for five days. If symptoms not improved please consult your doctor he will examine and treat you accordingly. Hope I have answered your query. Let me know if I can assist you further.