For healthy life, your diet should be healthy with diversity between fruits and vegetables combined with steady high activity level
Your daily calories need depends on gender, body shape and activity level. So it may vary between 1600 Kcal and 2000 Kcal daily.
BMI = Weight (Kg)/ Height*Height (Meter)
BMI <18.5 Kg/m2
BMI: 18.5 - 24.9 Kg/m2
BMI: 25- 29.9 Kg/m2
BMI: 35 - 39.9 Kg/m2