School girls play double Dutch  jump roping on a side street in Brooklyn, New York in the early 1980s.
RM2HJHTFFSchool girls play double Dutch jump roping on a side street in Brooklyn, New York in the early 1980s.
FILE - In this Feb. 13, 2014, file photo, United States' Bode Miller makes a jump during men's downhill combined training at the Sochi 2014 Winter Olympics, in Krasnaya Polyana, Russia. Bode Miller is launching a winter sports academy to help produce the next wave of standouts on the snow. Miller’s partnering with the Institute for Civic Leadership Academy to open an online learning program geared toward students in grades 7-12. (AP Photo/Luca Bruno, File)
RM2MGBB4EFILE - In this Feb. 13, 2014, file photo, United States' Bode Miller makes a jump during men's downhill combined training at the Sochi 2014 Winter Olympics, in Krasnaya Polyana, Russia. Bode Miller is launching a winter sports academy to help produce the next wave of standouts on the snow. Miller’s partnering with the Institute for Civic Leadership Academy to open an online learning program geared toward students in grades 7-12. (AP Photo/Luca Bruno, File)
14 JANUARY 2009 - SEOUL, SOUTH KOREA : South Korean participant makes a parachute jump during a winter military camp by South Korean Special Warfare Command at a military training field in Seoul on January 14, 2009. About 1,100 civilians including middle and high school students have been participating in the four-day-camp at six military units across the country to strengthen themselves mentally and physically and to promote national security awareness. Photo Credit: Lee Young-ho/Sipa Press/0901141506
RM2F0YNYD14 JANUARY 2009 - SEOUL, SOUTH KOREA : South Korean participant makes a parachute jump during a winter military camp by South Korean Special Warfare Command at a military training field in Seoul on January 14, 2009. About 1,100 civilians including middle and high school students have been participating in the four-day-camp at six military units across the country to strengthen themselves mentally and physically and to promote national security awareness. Photo Credit: Lee Young-ho/Sipa Press/0901141506
Troy University students Halie Edens, left to right, Brooke Spinks and Sydney Conrad play jump rope using Taylor McGraw as the rope on the campus Tuesday, Jan. 28, 2014 in Troy, Ala. A winter storm that would probably be no big deal in the North all but paralyzed the Deep South on Tuesday, bringing snow, ice and teeth-chattering cold, with temperatures in the teens in some places.(AP Photo/Troy Messenger, Mona Moore)
RM2P4R7CDTroy University students Halie Edens, left to right, Brooke Spinks and Sydney Conrad play jump rope using Taylor McGraw as the rope on the campus Tuesday, Jan. 28, 2014 in Troy, Ala. A winter storm that would probably be no big deal in the North all but paralyzed the Deep South on Tuesday, bringing snow, ice and teeth-chattering cold, with temperatures in the teens in some places.(AP Photo/Troy Messenger, Mona Moore)
George Lemmon,15, hits a jump in Riverside Park as students take advantage of the school closings after a blizzard dumped nearly a half of foot of snow on January 27, 2015 in New York City. The city is in the process of cleaning up following the storm which turned out not to be as severe as predicted.        Photo by Monika Graff/ UPI
RMTYPJJRGeorge Lemmon,15, hits a jump in Riverside Park as students take advantage of the school closings after a blizzard dumped nearly a half of foot of snow on January 27, 2015 in New York City. The city is in the process of cleaning up following the storm which turned out not to be as severe as predicted. Photo by Monika Graff/ UPI
Sebastian Wagner slides off a jump ramp at the bottom of a snow-covered hill on Jan. 30, 2014, in Decatur, Ga. The rare Southern region snowfall left greater metro Atlanta streets clogged with commuters and students taking a few days off. (AP Photo/ Ron Harris)
RM2N5K0EDSebastian Wagner slides off a jump ramp at the bottom of a snow-covered hill on Jan. 30, 2014, in Decatur, Ga. The rare Southern region snowfall left greater metro Atlanta streets clogged with commuters and students taking a few days off. (AP Photo/ Ron Harris)
Girls friends join hands in the center on a winter day.
RF2GTKGA2Girls friends join hands in the center on a winter day.
Ben Colpean, 14, of Saginaw Township lands a jump while snowboarding on the snowboard terrain park at Apple Mountain in Freeland, Mich. on Friday, Feb. 8, 2013. Overnight snow caused all area schools to close for the day giving students the chance to spend a sunny winter's day snowboarding or skiing down the hill. (AP Photo/The Saginaw News, Jeff Schrier)
RM2P5MCFBBen Colpean, 14, of Saginaw Township lands a jump while snowboarding on the snowboard terrain park at Apple Mountain in Freeland, Mich. on Friday, Feb. 8, 2013. Overnight snow caused all area schools to close for the day giving students the chance to spend a sunny winter's day snowboarding or skiing down the hill. (AP Photo/The Saginaw News, Jeff Schrier)
Waverly Fire's Tell Hanes, left, and Southeast Fire's Trey Wayne, right, jump over freezing water to high five while participating in a Surface Ice rescue technician course on Friday, Jan. 6, 2023, at Holmes Lake Park in Lincoln, Neb. The International Rescue and Relief department at Union college held rescue training course at Holmes Lake for students and local fire departments. (Kenneth Ferriera/Lincoln Journal Star via AP)
RM2NHFJGCWaverly Fire's Tell Hanes, left, and Southeast Fire's Trey Wayne, right, jump over freezing water to high five while participating in a Surface Ice rescue technician course on Friday, Jan. 6, 2023, at Holmes Lake Park in Lincoln, Neb. The International Rescue and Relief department at Union college held rescue training course at Holmes Lake for students and local fire departments. (Kenneth Ferriera/Lincoln Journal Star via AP)
Flames and smoke soar up with a “whoosh” as the Olympic flame is lit at the top of the Olympic Stadium at Innsbruck, Austria on Jan. 21, 1964. The lighting was part of the first rehearsal for the opening of the Winter Olympic Games on January 29. Some 1,300 high school students took part in the rehearsal at the Ski Jump Stadium, Imitating Athletes and marching behind the flags of the 35 nations entered in the competition. (AP Photo)
RM2NEYMK6Flames and smoke soar up with a “whoosh” as the Olympic flame is lit at the top of the Olympic Stadium at Innsbruck, Austria on Jan. 21, 1964. The lighting was part of the first rehearsal for the opening of the Winter Olympic Games on January 29. Some 1,300 high school students took part in the rehearsal at the Ski Jump Stadium, Imitating Athletes and marching behind the flags of the 35 nations entered in the competition. (AP Photo)
Young people jump in winter on snow and lift hands upwards
RFCF6KWPYoung people jump in winter on snow and lift hands upwards
14 JANUARY 2009 - SEOUL, SOUTH KOREA : South Korean participant makes a parachute jump during a winter military camp by South Korean Special Warfare Command at a military training field in Seoul on January 14, 2009. About 1,100 civilians including middle and high school students have been participating in the four-day-camp at six military units across the country to strengthen themselves mentally and physically and to promote national security awareness. Photo Credit: Lee Young-ho/Sipa Press/0901141501
RM2F0YP0T14 JANUARY 2009 - SEOUL, SOUTH KOREA : South Korean participant makes a parachute jump during a winter military camp by South Korean Special Warfare Command at a military training field in Seoul on January 14, 2009. About 1,100 civilians including middle and high school students have been participating in the four-day-camp at six military units across the country to strengthen themselves mentally and physically and to promote national security awareness. Photo Credit: Lee Young-ho/Sipa Press/0901141501