Day Trading: What the Evidence Shows
The households that traded most earned 11.4% a year against 17.9% for the market, and fewer than 1% of day traders profit reliably. What 25 years of trading records show, including the case for retail traders.
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Rugby injuries, the tackle and the law that lowered it
Tackle concussions fell 38% after Irish community rugby lowered the tackle below the sternum. What rugby injury research shows, and how to play safely.
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Surfing injuries, your own board and the shark in proportion
Most surfing injuries come from your own board, not sharks. What research shows about surf injuries, drowning and reefs, and how to surf more safely.
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Badminton injuries, the Achilles at 36 and the shuttle in the eye
Achilles ruptures in recreational players around 36 and shuttlecock eye injuries: what badminton injury research shows, and how to keep playing safely.
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Boxing injuries, headguards and the fights that add up
Boxing injuries: cuts, hand fractures and concussion, how brain effects rise with each fight, what headguards do and do not prevent, and non-contact boxing.
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Horse riding injuries, helmets and the kick on the ground
Horse riding injuries: falls in the saddle, kicks on the ground, the motorcycling myth, helmets and air vests, and why riding is still worth doing.
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Ice hockey injuries, body checking and the rule that halved them
Ice hockey injuries: concussion, faces and necks, and how removing body checking for 11- and 12-year-olds halved injuries in Canadian youth hockey.
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Volleyball injuries, ankles at the net and the second sprain
Volleyball injuries: why ankle sprains happen at the net, the 9.8-fold risk of a second sprain, what the prevention trials found, and how the sport compares.
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Pickleball injuries, older beginners and the fall that breaks a wrist
Pickleball injuries by the numbers: falls, wrist fractures and Achilles tears in older beginners, what the evidence supports, and why quitting has costs too.
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Rock climbing injuries, fingers, falls and the rope
Rock climbing injuries: a gym rate of 0.02 per 1,000 hours, finger pulleys, bouldering ankles, and the short ropes behind serious outdoor falls.
