Dean Yendall hasn't had to change too much to take the ride on lightweight Magnapal in the Caulfield Cup.

While most jockeys would be on a strict diet and fitness regime to get down to the 50kg Magnapal carries on Saturday, Yendall has concentrated on healthy eating.

"I've basically just stopped eating the wrong food," Yendall said.

"I'm naturally a lightweight so it's no issue to get it off."

With long hours spent in the car travelling from his home town of Horsham in country Victoria, Yendall says he snacks on chocolate and chips, but in recent weeks that has been replaced with fruit.

Yendall is one of the busiest jockeys in Victoria, riding five to six days a week and he made the 3-1/2 hour drive to Caulfield on Wednesday for one mount.

A welcome day off on Thursday was followed by a busy day at Donald, a short drive of just an hour from home, before taking his second Caulfield Cup ride after partnering Niwot in 2011.

Yendall made the trip to the Stawell stables of father-and-daughter training partners Terry and Katrina O'Sullivan last week to partner Magnapal in a gallop then had a canter around on the gelding on Tuesday when at the track for some jump-outs.

Yendall said he would make use of the gelding's light weight from an outside draw.

"We don't want to be too far back and with no weight we want to use that," he said.

"They'll all be jostling for position in the first furlong before the turn but even if we're three wide with cover that's not too bad."

If Magnapal, a $35 chance, was to win the Caulfield Cup, Yendall may splash out on something a bit more than service station snacks for the trip home.