Hi Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concern...
Severe sweating can lower your body temperature & cause
chills. Severe sweating may be due to many reasons such as Low blood
glucose level, low blood pressure, excessive physical activity,
fever etc. Following remedies can be done
1. First you should never skip your meal. Taking a balanced diet before your work will prevent
low blood sugar due to fasting.
2. Never over-exert yourself. Do that much physical activity that is easy to your body
3. You can take energy drinks.
If problem persists, visit a physician
Don't worry you would be fine
Hoping your query is solved