Which president regularly skinny dipped in the Potomac River?

President John Quincy Adams is known for many things, from being the first son of a president to follow in his father's footsteps to regularly going for nude swims in the Potomac River. Anne Royall became the first woman to interview a president when she discovered John Quincy Adams on one of his early morning nude swims and hid his clothing until he agreed to the interview.

John Quincy Adams, the sixth president of the United States, coped with the stress of serving as president by taking a brisk nude swim in Washington D.C.'s Potomac River every morning at 5 a.m.