People paddle on kayaks across the Potomac river during warm weather August 12, 2016 in Washington, DC. Millions of Americans will spend the weekend hot under the collar as soaring East Coast temperatures and stifling humidity slapped excessive weather warnings. The heatwave stretches from southwest Ohio to west Virginia, Washington DC, Boston, New York and Philadelphia, according to the National Weather Service. / AFP PHOTO / Brendan SmialowskiBRENDAN SMIALOWSKI/AFP/Getty Images

RIO DE JANEIRO, BRAZIL - AUGUST 12: Julio Alsogaray of Argentina waits to compete in the weather delayed Men's Laser class on Day 7 of the Rio 2016 Olympic Games at Marina da Gloria on August 12, 2016 in Rio de Janeiro, Brazil. (Photo by Clive Mason/Getty Images)

RIO DE JANEIRO, BRAZIL - AUGUST 12: Julio Alsogaray of Argentina waits to compete in the weather delayed Men's Laser class on Day 7 of the Rio 2016 Olympic Games at Marina da Gloria on August 12, 2016 in Rio de Janeiro, Brazil. (Photo by Clive Mason/Getty Images)

RIO DE JANEIRO, BRAZIL - AUGUST 12: Philipp Buhl of Germany waits to compete in the weather delayed Men's Laser class on Day 7 of the Rio 2016 Olympic Games at Marina da Gloria on August 12, 2016 in Rio de Janeiro, Brazil. (Photo by Clive Mason/Getty Images)

RIO DE JANEIRO, BRAZIL - AUGUST 12: Enrique Jose Arathoon Pacas of El Salvador waits to compete in the weather delayed Men's Laser class on Day 7 of the Rio 2016 Olympic Games at Marina da Gloria on August 12, 2016 in Rio de Janeiro, Brazil. (Photo by Clive Mason/Getty Images)

RIO DE JANEIRO, BRAZIL - AUGUST 12: Enrique Jose Arathoon Pacas of El Salvador waits to compete in the weather delayed Men's Laser class on Day 7 of the Rio 2016 Olympic Games at Marina da Gloria on August 12, 2016 in Rio de Janeiro, Brazil. (Photo by Clive Mason/Getty Images)

RIO DE JANEIRO, BRAZIL - AUGUST 12: (L-R) Lee Parkhill of Canada and Sam Meech of New Zealand wait to compete in the weather delayed Men's Laser class on Day 7 of the Rio 2016 Olympic Games at Marina da Gloria on August 12, 2016 in Rio de Janeiro, Brazil. (Photo by Clive Mason/Getty Images)

SILVIS, IL - AUGUST 11: A selfie station sign of Jordan Spieth sits in front of a weather delay sign during the continuation of the first round of the John Deere Classic at TPC Deere Run on August 12, 2016 in Silvis, Illinois. (Photo by Michael Cohen/Getty Images)