There are three fleshy parts on each finger. Four fingers on each hand. Use thumb to point at each fleshy part in sequence to count from 1-12. This is what I do

There are three fleshy parts on each finger. Four fingers on each hand. Use thumb to point at each fleshy part in sequence to count from 1-12. This is what I do for counting/addition. However, recently getting into music. Now, add a fourth count on each finger (point with thumb at the fleshy part on the palm just below each finger), to get a 16 count on one hand.