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TIL rowing increases parts of the heart to enlarge so it can pump more blood. The exercise increases blood pressure and strengthens heart walls as well.

Read more pubmed.ncbi.nlm.nih.gov

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rR9Ly TIL that Adam Savage and Jamie Hyneman from "Mythbusters" couldn't stand each other and only managed to work so well together due to their professionalism.
ypde TIL that it is cheaper to buy and resell a textbook than rent one
DQaRj TIL The iconic "Hollywood" sign was originally meant to be a temporary advertisement for a real estate development called "Hollywoodland," but it became so popular that it was made a permanent landmark.
X0L56 TIL Danny DeVito's short stature is the result of Multiple Epiphyseal Dysplasia (Fairbank's disease), a rare genetic disorder that affects bone growth. He met Rhea Perlman when she went to see a friend in the play The Shrinking Bride, which featured DeVito, and they moved in together 2 weeks later.
n1kB TIL there’s a second Monalisa in Museo del Prado, Madrid, that was probably painted by one of Da Vinci’s pupils. When viewed combined with the original Mona Lisa, it can create a 3-D effect, making it the first stereoscopic image in world history.