"These are kids that want to be here," said Makris.
The camps aren't your typical workshops or outdoor activities.
"Strength training, speed development, agility," said Makris.
He helps younger kids concentrate on attainable athletic goals.
"I do like running track and cross country so I want to increase my speed ability," said Rhinelander 8th grader, Sage Flory.
Makris has been teaching the clinics for 11 years.
"The fun thing is seeing the development through the years, how they get better," said Makris.
He recognizes that speed and agility camps aren't the most popular for this young age group. But that doesn't stop him from making an impact.
"The main thing is not getting stronger or faster, but building self-confidence and self-esteem," said Makris.
And for Flory, she's already learning that lesson.
"It's fun to prove that girls can do it too," said Flory.