In the left image, the guy who is on the floor (mr black shorts) is unable to hold a hollow man posture; he is also the guy standing on top of (mr white shorts) in the image on the right: notice anything about mr black shorts? In the image where he is standing… he isn’t exactly someone who looks ‘out of shape’, in fact, if you look closely he’s got himself a six-pack and by looking at him most would say that he is not only in shape, but looking pretty ripped especially in his core.
But, he ain’t got any core strength!
The core is not the six-pack.
The core is an entire layer of muscles which are the deepest and most foundational to the musculo-skeletal system.
The core stretches from the feet all the way up into the skull.
If you ain’t got a core, if you lack musculo-skeletal strength and endurance at the core level then you lack musculo-skeletal strength and endurance at all levels, and the only one alternative to obtaining strength and endurance is chemically: i.e. trigger your flight-fight-freeze (3F) emergency/survival systems (i.e. the glands) to flood your body with turbo-charging hormones and neurotransmitters with painkillers thrown in to mask all the damage you are inflicting to yourself.
If your coach is not training you to develop your core and if your coach is not training you to initiate all movements from your core, then your coach is too ignorant to be coaching (and likely egotistical beyond belief) because all that they know is how to trigger your 3F emergency/survival system.
If all your coach does is write up workouts… and provides no or next to no sport specific technique, skill, tactic and strategy training… then your coach is too ignorant to be coaching.
The uneducated and inexperienced think that performance is derived from a 3F emergency/survival system trained to act whenever its time to workout.
The uneducated and inexperienced think that peak performance is about pain, suffering, desire and being able to will yourself forward to the finish line.
The uneducated and inexperienced think that there is a short cut to consistent peak performance. There is no short cut.
The one and only way to consistent peak performance without any long term deleterious health consequences comes via the core.