Going by observation, I have learnt that physical fortitude can only do so little.
Many things in life need physical strength but most of the things you need to do to move your life progressively forward – (because there is a kind of progress that takes you back) do not need as much physicality.
A lot of the things you will contend with in life are things you cannot see, they are intangible.
You cannot go up against life with just physical strength. You will come short.
You will be limited.