England coaches Graham Rowntree and Mike Catt have revealed the pre-season training methods which made them both Lions legends, ahead of the new Premiership season in September.
And the most important one, agreed on by the decorated pair in a video for QBE Rugby, is enjoying your time off... but not too much.
Catt- who was part of Sir Clive Woodward's celebrated World Cup winning team in 2003 - confirmed he doesn't expect his England charges to train on the off-season, and believes there's no point going anywhere near a pitch in the early stages of pre-season.
He said: "I don't think there's any need to. You're doing lots of weights for the first three or four weeks so it's more of a mental thing.
"Everybody is built differently. Some players will put on 11kg in two weeks if they don't look after themselves, which will hinder their pre-season development when they get back.
"But a lot of the guys now, it's their job so they do look after themselves, and to be fair they're in pretty good nick."
Voice of experience
And Catt - who became the oldest player ever to play in a World Cup final in 2007 - is perfectly qualified to evaluate current players' superior fitness compared to his own contemporaries, having retired from international rugby at the grand old age of 36.
Rowntree, who coaches England's forwards, also believes it is important to find a balance between keeping yourself sharp and putting your feet up during the off-season.
But he rejected the notion that there is any value in rugby training over the Summer, instead suggesting tennis, running and cycling as the perfect blend.
He said: "Even on holiday I used to go running a lot. It's important to keep yourself ticking over. Have a good rest but don't switch off completely.
"In the off-season, in your downtime I would do something every other day. There's no value doing any more than that."
Named and shamed
The former international prop also revealed which of his fellow players was the worst at letting themselves go in the off-season, and did the most laboured chugging around the pitch when the new season rolled around.
He did not hesitate to pick out former Leicester Tigers team-mate Dorian West.
Rowntree said: "Easy, easy answer. Every Summer he would let himself go. He was notorious.
"It was frustrating as well because he did used to get it back very quickly and was still one of the best players at the start of the year!"
So whilst he was quick to laud the benefits of enjoying time off, he was equally hasty to point out that isn't a free pass for players to switch off entirely.
Rowntree's message was clear: Don't eat all the pies, or if you must, just make sure to go for a run afterwards.
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