JONESBORO, Ga. -- Funeral ceremonies were held Saturday for 17-year-old Forrest Jones of Locust Grove.
Jones spent a week in the hospital before losing his life this past Tuesday. Doctors believe Jones suffered a heat stroke after a voluntary workout with his football team on July 25.
Jones collapsed while walking inside after practice at Locust Grove High School. He stood up, and fell again, according to school officials.
He had been in critical condition at Children's HealthCare of Atlanta. As of Tuesday, they said his liver and kidneys were no longer working and his brain showed no signs of activity.
A family member told 11Alive's Blayne Alexander that Jones died Tuesday night.
Forrest Jones had spent this summer gearing up for his return to the football field this fall. His family says his determination may have cost him his life.
They have a message for other student athletes: "If you feel like you're tired or thirsty, tell your coach you gotta take a break, you gotta sit down," his sister Cora Jones said.
"It ain't worth it to keep pushing yourself. And that's what Forrest does," she said. "He's not a complainer. He pushed himself."
Cora Jones said her brother didn't have any medical conditions.
"When you think it can't happen to your or your family, it really can," she said Tuesday.
Henry County school officials stress the practice was not mandatory, but rather a voluntary football workout, one of several held throughout the summer.
Jones' funeral was at Tara Garden Chapel in Jonesboro. A motorcycle procession led family and friends from the chapel to the teen's final resting place.
Jones' was not the only death from the heat last week. A South Georgia teen also died last week while attending football camp in Lake City, Florida.
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Due to restrictions from the Georgia High School Organization, teams statewide were not allowed to start mandatory outside practice until Aug. 1. Because of the heat, many local schools are still holding football practice indoors or early in the morning.