Herne Bay Ironman student's air ambulance fundraising
A 21-year-old Kent student is training for an Ironman event and raising money for the Kent, Surrey and Sussex Air Ambulance.
Isaac Searle, a PE student at Canterbury Christ Church University, is also taking part in research into the effects of amateur athletics.
He said he hoped to complete the 2.4 mile swim, 112 mile bike ride and marathon in under 11 hours in October.
Mr Searle, from Herne Bay, said he felt "absolutely terrified" by the event.
His fitness is tested as part of a study into the effects of training at the University of Hertfordshire.
Dr Justin Roberts, the leader of the project, said: "There is an increase in the numbers of people taking on these extreme challenges and who don't always cope well because they are under-prepared"'Long road ahead'
He said the 100 people taking part in the study would have regular tests as their training progressed.
Dr Roberts said: "Isaac has gone Ironman crazy. He's doing very well but he's got a long road ahead of him."
As well as leading the research, Dr Roberts is also set to take part in the Ironman event.
Mr Searle said: "You do eight weeks of training, then go for testing and then you're set the next block of training."
He said he was up to the Ironman distances on each of the disciplines.
Though he added: "I don't think I could do all three together yet."
The PE student has also been organising other fund raising events in between his six-day-a-week training schedule and his university studies.