- BMI classifier
- Underweight = <18.5

Normal weight = 18.5–24.9

Overweight = 25–29.9

Obesity = BMI of 30 or greater

- Underweight = <18.5

- Collatz Conjecture
- If odd number, the next number is 3x+1
- If even number, the next number is x/2
- How long does it take until you get to x=1?