Launching off a 300-meter-high tower platform with only seconds to pull your rip cord might sound like the act of an insane person.
But that's exactly what 103 base jumpers from 20 countries -- presumably all of sound mind -- did in Malaysia over the weekend.
The jumps were part of the annual KL Tower International Jump 2013, held in Kuala Lumpur from Sept. 27 to 30.
Kat Donahue, 32, a location manager from the United States, was one of six women jumping this year.
"A lot of people do say I'm crazy but my family is pretty supportive," she said.
"Jumping can be scary, but when you calm your nerves and become quiet it's very peaceful out there, meditative. Base jumping can be solitary but this is such a social event, it's great."
This year's jump also welcomed Sean Chuma from the U.S., a pioneer in tandem base jumps, and Lonnie Bissonnette, a paraplegic base jumper from Canada.
"Lonnie is inspiring for me as there are extra risks involved for him, but he has been jumping for years," said event organizer Gary Cunningham, 42, an electronic engineer from Australia.
"Unfortunately his accident was caused by base jumping, but he highlights how if one avenue closes you focus on what you can do. Lonnie has been able to do some pretty amazing stuff."
Cunningham has been organizing the Kuala Lumpur event since 2005 and has around 2,900 jumps under his belt.
He said if you want to try base jumping, start by skydiving.
"Through skydiving you learn precision falling and how to handle parachutes. You also learn how to deal with things when they go wrong. The potential risk is very real."
World's worst pick-up line?
With risk comes reward -- the ultimate adrenalin buzz.
But you'd be mistaken to assume that saying you're a base jumper works as a pick-up line.
"It doesn't help you pick up women, it helps you lose them actually," said Peter Wyllie, 33, a junior doctor from Australia.
"Women tend to see base jumpers as not a particularly secure future. Who wants to have babies with someone who is committed to tracking down a 4,000 foot wall?"
The point was echoed by David Laffargue, 24, from France.
"Some women say they're scared of the sport, but then I do also spend all my time and money on base jumping!"
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