If a 14 year old has BMI of 20 can he get abs?

The ability to acquire abs is mainly determined by body fat percentage and muscle development, rather than age or BMI alone. Here are a few factors to consider:

1. Body Fat Percentage: To achieve visible abs, body fat percentage needs to be quite low. A significant portion of body fat may mask the underlying abdominal muscles.

2. Muscle Development: Abs are muscles, so proper exercise and nutrition are necessary for their development. Building abdominal muscle mass is essential to get defined abs.

3. Genetics: Some individuals may have a genetic predisposition to store more fat in the abdominal region or may have a naturally weaker core. Genetics can play a role in the visibility of abs.

A BMI of 20 is considered within the healthy range for a 14-year-old. However, BMI is not an indicator of muscle mass or body fat percentage. Depending on the individual's body composition, it may be possible for them to achieve abs, although it may require a combination of proper exercise, nutrition, and genetics.

If the 14-year-old is interested in getting abs, it's important to focus on balanced nutrition and appropriate exercises targeted at developing abdominal muscles. Consult with a qualified fitness professional or healthcare provider for personalized advice tailored to their specific goals and developmental needs.