And the whole boobs shouldn't move with right running style?
Not no movement. But there should be little movement.
Unless you're doing sprint intervals (where your running style might go to pot with the effort) or long distance, when the time will take its toll - then there should be minimal movement.
totallyliterally - your bodily movement is different when walking and running. It's not just about more speed = more movement. In many ways the opposite to this is true.
Good running style has:
- no up/down head movement
- no up/down shoulder movement
- if someone was watching you run along a hedge, watching from the other side of the hedge, they should just see your head moving in a steady forward motion only, no other movement.
- arms move in time with your legs, in a relaxed way that doesn't tense or drag your shoulders.
- feet and calves should move in a cycling motion - knee up, foot forward, foot down in a rounded movement and push off the ground.
- this stops feet slapping the ground heavily, reverberating through the body. You should be landing lightly (and I was a big, obese woman when I started running - big women can still run lightly on their feet)
These together lead to very little chest movement. There should be no "bouncing" because there should be no up/down movement of your torso. None at all. There is more up/down movement, therefore more bouncing, when walking compared to running.
I maintain - chest movement should be minimal for an averaged paced, average distance run.
AuntieStella - I have breastfed 4 children. My boobs are of the downward facing 34F. I maintain chest movement should be minimal for an averaged paced, average distance run. If you are running less than 10K at a steady pace and your boobs are jiggling everywhere in a mid-impac crop-top bra, I'd strongly suggest focusing on your running style. You'll run better for it, as well as being more comfortable while running.