US: What with all those calisthenics and sweating, some children would rather pay than go to gym class.
If only they had Terence Braxton, police say, as a teacher.
Braxton allowed children to skip his class if they paid him $1 a day, according to charges filed by authorities in Florida.
They say he may have racked up as much as $1,000 or more over three months.
The 28-year-old teacher has been charged with six felony counts of bribery and turned himself in at a Pensacola jail on Thursday.
"If you had 100 kids paying, that's not bad in tax-free money," said Ronnie Arnold, associate superintendent of the Escambia County schools. Teachers earn about $30,000 in their first year.
The second-year teacher at Ernest Ward Middle School in a rural area on Florida's Panhandle was popular and coached the boys basketball team.
"The basketball team had lost every game for five years," principal Nancy Gindl-Perry said. "This year, we only lost two games and they were only by two points. He had a very good rapport with the kids."
Suspicions about Braxton arose during a parent-teacher meeting, when the teacher known as "Coach Braxton" and a student differed on attendance records. Eventually, the student said he had paid Braxton "several times", Ms Gindl-Perry said.
An investigation by the school and the sheriff's office, showed that there had been 30 "victims", according to Escambia County Sheriff's office spokesman Mike Ward.
The $1 fee is considered bribery because it is "unlawful compensation for official behaviour", Mr Ward said.