Absolutely dancing. Dr Emma Hilton's Fair Play For Women speech is worth quoting again & again:
Male puberty is the point at which boys really open the physical gap on girls. To 10 years old, testosterone levels in boys and girls are broadly similar. At puberty, male testosterone levels surge and stabilise at around 20 times higher than in females. This surge shapes a boy into a man, and into a superior athlete.
Males are five inches taller than females. Longer arms give a greater reach and can generate more speed on a cricket ball. Bigger hand spans can more easily palm basketballs. Longer legs and narrower pelvises lead to better running gaits. Males need fewer strides to cross a distance and the strides they take are more efficient.
Males have around 40% more muscle mass, even when height is taken into account, and 40% less body fat. The muscle they have is denser, more fibres, larger fibres. Higher numbers of muscle stem cells make new muscle fibres, donate nuclei to strengthen existing muscle fibres, help healing. They have higher proportions of fast twitch fibres – these are the fibres responsible for explosive movement. Stiffer connective tissue – ligaments and tendons are tighter springs – means greater storage of potential energy and even more explosive power. In short, male muscles can move way more quickly and with far greater force than female muscles. And with larger hearts, lungs and haemoglobin pools, they can feed them more oxygen.
This list, now deeply familiar, is nowhere near comprehensive, and with 6500 differences in gene expression between males and females, there are still many unknowns. The majority of these differences are likely driven by testosterone-fuelled puberty – it is one hell of a drug. It has delivered us athletes like Usain Bolt and Michael Phelps. As the original anabolic steroid, used widely in the 1980s in state-led doping programmes, it has almost certainly delivered us a fair few elite females too.
If the IOC allow Hubbard to compete next year, their contempt for women and fairness is plain to see.