Imagine how life would be if you couldn't sweat.

Ty Paisley, a San Clemente 8-year-old with a rare genetic condition, has learned to drench his shirt before attempting anything that would make him sweat.  Last week, playing with his Marblehead Elementary School classmates, "I poured a water bottle over me," he gleefully said.  "Other than the heat restrictions he's a normal boy with tons of energy," said his father, James Paisley.  On Sept. 5, Dad plans to attempt something not normal – swim 9.5 miles over open ocean, from the Hawaiian island of Lanai to its neighbor, Maui – to support Ty and raise awareness of Hypohidrotic Ectodermal Dysplasia.  Dad also will use the Maui Channel Swim to raise funds for the National Foundation for Ectodermal Dysplasias, a support group for those affected and their families.  The NFED has been "a lifesaver," James and Tammie Paisley say, since they discovered Ty's condition when he was a year old. He not only can't sweat, but he has no teeth (he wears dentures) and he has very sparse blond hair.  Ty doesn't let it bother him. He exuded enthusiasm and confidence while meeting with a reporter and photographer at the beach a few days ago, and never mind that he wasn't wearing his dentures. He'd outgrown his old ones and was awaiting a new set.  Does he think Dad can swim the Maui Channel?  "Well, so far I'm thinking he's going to get eaten by a shark, but I still believe in him," Ty said.  In other words, no sweat.  Ty will be as close to Dad as possible, riding in a lead boat. Dad has dubbed the race "Swim-4-Sweat." He expects the swim to take four to six hours.  "I was a good high school swimmer, and for fitness and just stress relief I've been swimming for the last 20 years," he said. "I've taken it a lot more seriously in the last couple of years when I came up with this idea for Swim-4-Sweat."  He's swum 5-6 days a week since fall, 2007. He was intent on doing the Maui Channel Swim in Aug., 2008. "Two weeks before the race, I was waterskiing in Arizona and broke my ribs," he said. "I had this fundraiser built up and felt I had to fill the commitment." So he's back on it this year. He will be 39 when he hits the water off Lanai.  "I've swum in a 10K reservoir race up at Colorado, which was a little over six miles, but nothing like the open channel," he said. "I'm a little intimidated by it."  You may spot Dad training this summer in the ocean off San Clemente. "I'll probably be swimming out and around and up and down the pier, from T-Street to North Beach, quite often," he said.  Someday, might Ty do like Dad? "He's a great swimmer," Dad said. "I've kind of steered him into swimming. I can foresee the future. It's going to be difficult to play competitive baseball, soccer, when he's getting too hot. He loves the beach. He loves being in the water."