Coach Peter Moores says England have "work to do" before they return to Sri Lanka next month for a Test series.
Sidebottom had problems with cramp in the one-day series
The tourists were hammered by 107 runs in the final one-day match and though pleased with their 3-2 series success, Moores says they need to toughen up.
"The lads worked really hard before they came out here but Ryan Sidebottom got cramp," he said.
"It will be harsher in the Tests when we're playing in daylight all the time so we've got some physical work to do."
England announce their squad on Friday for the three-match Test series in Sri Lanka, which starts in Kandy on 1 December.
They will have two warrm-up matches before that and one man who will not feature is influential all-rounder Andrew Flintoff, who has undergone ankle surgery and is not expected to be available until next summer's home series.
In places like this for seamers it's hard work because of the conditions and you often want two spinners
Moores on the Test series
Moores says the selectors will have plenty of thinking to do about how to fill the void bearing in mind the hot conditions they will encounter in the subcontinent.
"Finding a balance is hard. In places like this you know for seamers it's hard work because of the conditions - the heat - and you often want two spinners.
"To try to get that and keep the depth in the batting is going to be tough. It's a long day and you've got to be open to doing anything.
"People have won here playing two seamers, three seamers or two spinners so you have to look at that."
Graeme Swann has been tipped to return to Sri Lanka as the second spinner alongside slow left-armer Monty Panesar.
A lot of people asked whether he could do it away English seamer-friendly conditions and he has
Paul Collingwood on Sidebottom
The 28-year-old off-spinner took seven wickets in the first four one-day games - his first international action for seven years - before being sidelined with a torn hamstring.
Moores hinted that he is likely to get the nod, saying: "He's done fantastically well and I'm so pleased for him because he's a cricketer who came in and went back like Ryan Sidebottom and improved his skills.
"He has got good variation and showed a lot of confidence out here with the bat, the ball and his fielding."
Sidebottom is also expected to be back for the Tests after being named man of the one-day series, during which he claimed 12 wickets.
The Notts seamer, 29, was recalled earlier this summer following a lengthy absence and impressed against West Indies and India in the home series.
Skipper Paul Collingwood said: "He's been outstanding. A lot of people asked whether he could do it away from England, away from English seamer-friendly conditions and he has done it.
"He's come here, banged away at a length, and used the reverse-swinging ball well. He's learned a hell of a lot from this series."