Retired army officer Pannir Selvam, 51, is not a newcomer to the OCBC Cycle and is no stranger to the preparation process required to complete the 42km ride.
Yet he found yesterday's Polar Training boot camp refreshing.
He told The Sunday Times: "These build-up events are quite interesting. (The boot camp is) a good way to gear you up for the cycle.
"You need a big group like this for this kind of exercise to give you that extra push even when you're tired, so I'm glad I came."
He was one of 20 participants who slogged it out at the 100Plus Promenade of the Singapore Sports Hub, as first light hit the bay yesterday. A new addition to the range of build-up events leading to the Oct 1-2 OCBC Cycle, the boot camp aimed to get participants in shape for the ride.
Koh Ching Ching, head of group corporate communications at OCBC Bank, said: "We are happy to have Polar as a new Friend of OCBC Cycle offering a great fitness workout session for the cyclists. We are sure that the tips picked up from the Polar trainers will help them prepare for the long rides in October."
The 90-minute session included fun games and workouts that involved running, lunges, flutter kicks and push-ups. The participants stopped to check their heart rate after every other workout.
Edwin Ong, general manager of Polar Electro Singapore, who also led the session, said: "We wanted to show people how training doesn't have to be one-dimensional; another aspect is to use heart rate to monitor fitness.
"We also wanted to have a novel way for people to have fun even during high-intensity workouts to prepare them for the (OCBC) Cycle".
Elizabeth Tang, 24, who is learning to cycle under Project Training Wheels - an initiative by OCBC Cycle to teach people how to ride - enjoyed the warm-up games at the start of the 7.30am session.
She said: "I'm a morning person but not a keen exerciser. I feel like I've accomplished a lot even though it's only 9.30am."