It is highly unlikely that your symptoms of severe weakness and body shivering are related to masturbation, which is a normal, safe physiological activity. These symptoms are more likely due to underlying issues such as dehydration, electrolyte imbalance, lack of quality sleep, stress, or an early viral infection. To help recover your strength, focus on proper hydration, balanced meals, and adequate rest. You can temporarily take oral rehydration salts (ORS) or a daily multivitamin supplement. However, because shivering can indicate a fever or other medical issues, please consult a healthcare professional for a proper evaluation and blood tests. Rest assured, these symptoms are common and highly treatable.