"It’s a dirty little secret: motorcycle helmets can sometimes do more harm than good.
Optimized for high velocity impacts, when faced with low speed crashes their stiff energy absorbing EPS lining doesn’t deform and can transfer too much energy to the wearer’s skull."
Because direct contact between the impacted item and your skull transfers less energy and there for makes it safer to ride without one? I could understand saying they are "less effective in lower speed situations" but to say they are more harmful than a bare head is just ignorant.
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