April 1 marks back-to-work time for some NFL players.
Today clubs that hired a new head coach after the end of the 2018 regular season may begin offseason workout programs. Eight teams made changes this offseason.
The rest of the clubs can begin offseason workouts on April 15.
Teams returning for workouts starts the strength and conditioning portion of the spring. No actual football will take place in this stage. More importantly for new coaches, the meeting periods will enable them to go over their new playbooks and get a feel for their players.