Beyond just being able to draw a bow, being able to draw it well enough to have a chance of shooting at all repeatably takes a lot of training - it’s not just lifting a 50+lb weight, pulling it towards you with one and and pushing it away with the other while keeping your arms stable requires a lot of strength in muscles the people don’t tend to use.

Source: former colleague is an international competition level archer - the sheer amount of core strength and coordination and balance you need to be a good archer is wild