Michael Phelps, the most decorated Olympian of all time, certainly knows a thing or two about swimming techniques.

Baltimore native Michael Phelps plans to assist his hometown NFL team by giving swimming lessons to the Baltimore Ravens, who requested help on social media.

Cornerback Marlon Humphrey posted a video on social media asking 23-time Olympic swimming champion Michael Phelps — a Baltimore native — for swimming lessons. The video includes Humphrey, tackle Ronnie Stanley, safety Kyle Hamilton and tight end Charlie Kolar standing in the pool.