Thirty-seven school kids in South Korea are participating in a three-day summer military camp to strengthen their spirits and bodies. The camp is organized at the Cheongryong Self-denial Training Camp run by retired marines in Ansan, about 40 kilometers (25 miles) southwest of Seoul.

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Elementary school students shout quotThanks to my parentsquot at a mud flat as they participate in a summer military camp for civilians at the Cheongryong Self-denial Training Camp run by retired marines in Ansan
Elementary school students shout "Thanks to my parents!" at a mud flat as they participate in a summer military camp for civilians at the Cheongryong Self-denial Training Camp run by retired marines in Ansan REUTERS/Jo Yong hak
Elementary school students jump over paddles as they participate in a summer military camp for civilians at the Cheongryong Self-denial Training Camp run by retired marines in Ansan
Elementary school students jump over paddles as they participate in a summer military camp for civilians at the Cheongryong Self-denial Training Camp run by retired marines in Ansan REUTERS/Jo Yong hak
Students will better equip themselves with understanding on pressure and depression from love and sex.
As they reach college, these students will learn the psychology of love and sex as the Minister of Education announced on Friday, it will require colleges and universities a course in sex. REUTERS/Jo Yong hak
Elementary school students crawl forward at a mud flat as they participate in a summer military camp for civilians at the Cheongryong Self-denial Training Camp run by retired marines in Ansan
Elementary school students crawl forward at a mud flat as they participate in a summer military camp for civilians at the Cheongryong Self-denial Training Camp run by retired marines in Ansan REUTERS/Jo Yong hak
Elementary school students apply mud on their faces as they participate in a summer military camp at the Cheongryong Self-denial Training Camp in Ansan
Elementary school students apply mud on their faces as they participate in a summer military camp at the Cheongryong Self-denial Training Camp in Ansan REUTERS/Jo Yong hak
Elementary school students scream at a mud flat as they participate in a summer military camp for civilians at the Cheongryong Self-denial Training Camp run by retired marines in Ansan
Elementary school students scream at a mud flat as they participate in a summer military camp for civilians at the Cheongryong Self-denial Training Camp run by retired marines in Ansan REUTERS/Jo Yong hak
An elementary school student screams at a mud flat as they participate in a summer military camp for civilians at the Cheongryong Self-denial Training Camp run by retired marines in Ansan
An elementary school student screams at a mud flat as they participate in a summer military camp for civilians at the Cheongryong Self-denial Training Camp run by retired marines in Ansan REUTERS/Jo Yong-Hak
A camp instructor briefs elementary school students during a summer military camp for civilians at the Cheongryong Self-denial Training Camp in Ansan
A camp instructor briefs elementary school students during a summer military camp for civilians at the Cheongryong Self-denial Training Camp in Ansan REUTERS/Jo Yong hak
Elementary school students carry a rubber boat as they participate in a summer military camp at the Cheongryong Self-denial Training Camp in Ansan
Elementary school students carry a rubber boat as they participate in a summer military camp at the Cheongryong Self-denial Training Camp in Ansan REUTERS/Jo Yong hak
Elementary school students carry a rubber boat as they participate in a summer military camp at the Cheongryong Self-denial Training Camp in Ansan
Elementary school students carry a rubber boat as they participate in a summer military camp at the Cheongryong Self-denial Training Camp in Ansan REUTERS/Jo Yong hak
Elementary school students celebrate in a rubber boat as they participate in a summer military camp at the Cheongryong Self-denial Training Camp in Ansan
Elementary school students celebrate in a rubber boat as they participate in a summer military camp at the Cheongryong Self-denial Training Camp in Ansan REUTERS/Jo Yong hak
Elementary school students carry a rubber boat as they participate in a summer military camp for civilians at the Cheongryong Self-denial Training Camp run by retired marines in Ansan
Elementary school students carry a rubber boat as they participate in a summer military camp for civilians at the Cheongryong Self-denial Training Camp run by retired marines in Ansan REUTERS/Jo Yong hak
Elementary school students row rubber boats as they participate in a summer military camp at the Cheongryong Self-denial Training Camp in Ansan
Elementary school students row rubber boats as they participate in a summer military camp at the Cheongryong Self-denial Training Camp in Ansan REUTERS/Jo Yong hak
Elementary school students take a nap on a floor after a morning exercise as they participate in a summer military camp for civilians at the Cheongryong Self-denial Training Camp run by retired marines in Ansan
Elementary school students take a nap on a floor after a morning exercise as they participate in a summer military camp for civilians at the Cheongryong Self-denial Training Camp run by retired marines in Ansan REUTERS/Jo Yong hak
Elementary school students take a nap on a floor after a morning exercise as they participate in a summer military camp for civilians at the Cheongryong Self-denial Training Camp run by retired marines in Ansan
Elementary school students take a nap on a floor after a morning exercise as they participate in a summer military camp for civilians at the Cheongryong Self-denial Training Camp run by retired marines in Ansan REUTERS/Jo Yong hak
South Korea South Korea