In proper medical anatomical terms the “Core” isn’t really a thing. However it is a term that most riders recognise as a thing, and if you ask them where it is they will usually point at their abdominals.
If that’s you, you’re not wrong! The abdominals are very much a part of what we would call the core. However it also emcompasses other muscles around the waist and back too. So really the core is a wrap around of muscles kind of like……..a Corset! Ponders whether that’s where the term came from?
That is why just doing a bunch of sit ups won’t fully strengthen your “Core.” You’ve got to Strengthen the sides and back too!
Then to have it fit to ride you want it pliable, able to move , absorb force without becoming stiff and able to maintain stability whilst the limbs move independently of it.
This is why with my Weight lifting clients rarely do any traditional looking Core training. We do full body exercises such as the Barbell Squat and Deadlift which require stability of the torso whilst moving limbs under a load.
When we do “Core” work without equipment such as in my Classes or Online Programme we will mostly do them with movement of the torso or the limb; or sometimes both.
Here’s some examples of my core stability training whilst moving limbs. Bird dogs -regular and lifted, Deadbugs - Regular and Double.Mountain Climber Straight and Across, Side Plank Lift and Leg Lift.