The Cowboys' offseason program officially gets underway today at Valley Ranch.

As quarterback Tony Romo said over the weekend, a significant number of players have already begun to work out on their own at Valley Ranch. But Monday morning brings more structure to the workouts as it allows formalized supervision by the Cowboys staff for the first time since the end of last season.

Phase 1 consists of strength and conditioning activities for the players. It lasts for two weeks.

Phase 2 of the program allows the players to move to the field for more hands-on instruction from the coaching staff. Individual instruction and drills take place. No live contact or drills that involve offense vs. defense are allowed. This lasts for three weeks.

Phase 3 is when the Cowboys conduct their organized team activities and mini-camp. Each team is allowed a total of 10 practice days but no live contact is permitted. The veteran mini-camp, the only mandatory event during the offseason program, takes place during this four-week window.