5'3 19yrs female 266lbs. i want to join the military but i need to lose 120 lbs in the next 6 to 10 months. how often i should exercise a week?

3-5 days: That seems like a lot of weight to lose that quickly. Not sure you can safely lose that much so soon. I'd start with 30 minutes 3 days a week and work up to 1 hours 5 days a week. Good luck and thank you for wanting to join the military!

Exercise/Diet: 19 year old lady wants to lose 120 lbs over a 10 month period. Trying to lose weight too quickly is dangerous for your health. However, I can help you do this. You need to completely change your diet and exercise habits. No sugary beverages, alcohol, or high calorie drinks. Start with a healthy low carb breakfast, eat a sensible lunch, and make your dinner on a foreman grill using no oil/fat

I would see a doc: and do this under supervision….anytime you watch shows on TV like the Biggest loser they lose weight like this but always under a doctors supervision..minding what you eat is just as important..