Canadian athlete Dana Glowacka set the world record for women's plank standing. The figure is frightening - 4 hours 20 minutes. Such an impressive result required four years of hard training from the girl. By the way, the famous George Hood became Dana's coach - an athlete who, at the age of 60, set a record for the bar, having managed to stand for 10 hours, 10 minutes in the bar continuously. What alloy are their muscles forged from?