Aldershot boss Gary Waddock has warned of hard work ahead for his squad.
"I think they will find that pre-season training will possibly be harder than anything they have ever experienced before," he told the News & Mail.
"While in the Conference we found that our pace late in games could win matches, the other teams in League Two are up there with us.
"We have taken their body fat content and their weight readings and we expect them to return in the same shape or better."
Waddock has confirmed that new contracts have been offered to both Scott Donnelly and Mikhael Jaimez-Ruiz.
Midfielder Justin Cochrane and 37-year old Ricky Newman will not be offered a new playing contract at the club.
Newman made 102 appearances for the Shots.