The Weight Watchers Diet

The Weight Watchers Diet Plan encourages healthy dieting by eating healthy foods in moderate and diverse portions.
No aliment is forbidden, which gives the ultimate control, instead you are given a certain amount of points according to different criteria.

This is how it works:
every person can calculate the points that they can accumulate during one day according to their age, height, weight, sex and daily activity.
Here are the points (p):

• for sex:
  male= 15p
  female= 7p
  
  
• for age:
  18 to 20= 5p
  21 to 35= 4p
  36 to 50= 3p
  
  
• for weight:
  110 to 130 lbs (50 to 59 kg) = 5p
  131 to 152 lbs (60 to 69kg) = 6p
  153 to 174 lbs (70 to 79 kg) = 7p
  175 to 196 lbs (80 to 89 kg) = 8p
  
  
• for height:
  under 5' 3" (160 centimeters) = 1 p
  over 5' 3" (160 centimeters) = 2p
  
  
• for daily activity:
  if most of the time sitting = 0p
  if most of the time standing = 2p
  if most of the time moving = 4p
  if you lay effort = 6p

For example if you are a 22 year old female, and weight 132 lbs (60 kg) and you're under the height of 5' 3" (160 centimeters) with 0 points of daily activity you will have to eat a total number of ( 4+7+6+1+0 =) 18 points a day.