Many people see counting on your fingers as something you should outgrow quickly, especially since you can supposedly only count up to 10 on them anyway. However, doing more hand counting may actually help further your mathematical understanding, and you can in fact easily count up to 99 by using a simple method known as chisenbop (or chisanbop).[1] Most people figure out chisenbop hand-counting quickly, and from there you can move on to adding numbers and even multiplying with just your 2 hands!