Many people feel compelled to use their powers of manifestation to elicit bodily changes. Either they have some problem they want to be fixed or have some feature of the physical body they’d like to change.
Creating physical change via the mind is possible. It’s not just possible, actually — it’s something everyone is doing all of the time. Your body is your creative magnum opus. It’s the creation you continue working on for the entirety of your life.
Trouble only arises when the work you’re doing on the body is unconscious. So, if we want to create changes to the body, we need to understand how it ended up in a less-than-optimal state to begin with.