Let's make this birthday one to remember.

78 years old (Born on July 31, 1946)

Happy Birthday, Jurgen Grobler! You've coached more Olympic rowing champions than most people have candles on their cakes. From East Germany's powerhouse crews in the '70s and '80s to Great Britain's golden streak from Sydney 2000 through London 2012, your athletes rowed so fast they probably left scorch marks on the water.

Your legendary training sessions might've made grown men cry (and possibly reconsider life choices), but hey—no pain, no gain! Here's wishing you a birthday filled with laughter, joy, and absolutely zero ergometer tests. May your celebrations be as timeless as your incredible legacy—and far less exhausting!