Don't mess with ballet!And don't underestimate how much training, strength, skill, talent & dedication it takes to make it "look effortless"...it's FAR from that.
You can keep all the head-banging sports like boxing. Football would be far better if they played "tag" & got points taken off for unnecessary roughness, IMO.
And the athletes might survive their later years too.Let's see some skill (I love to watch most of the Olympics) instead of crash & bash... same reason I'd rather watch dressage than horse-racing. Skill, not force.