well..celery and carrots are negative calories which means you burn calories when you eat them...I guess cause there so crunchy...riding a bike in a high gear works for the thighs and do loads of crunches will work for the tummy! And you have to have MOTIVATION!!!lol
"What should a minimum calorie intake be?"
As a guide to minimum calorie intake, the American College of Sports Medicine (ACSM) recommends that calorie levels never drop below 1200 calories per day for women or 1800 calories per day for men. Even these calorie levels are quite low.
http://www.bmi-calculator.net/bmr-calculator/harris-benedict-equation/calorie-intake-to-lose-weight.phprapid weight loss