Under the NFL collective bargaining agreement instituted two years ago, old-school training camps no longer exist.
Two-a-day practice days were abolished, and teams are now limited in the amount of days they can have players practicing in full equipment and how much time they can spend with players each day on the practice field.
The intentions behind the rules are to try to prevent injuries.
Here's a copy of the guidelines for training camp recently sent to player union representatives from the NFL Players Association:
TRAINING CAMP GUIDE
Day 1: Physicals, Testing, Meetings (no on-filed activities except running and conditioning)
Day 2: No pads and no contact
Day 3: No pads and no contact
Day 4 through end of camp:
1 padded practice for no more than 3 hours + 1 walk through
3 hours between practices
4 hours total on the field
A padded practice that goes more than 60 minutes and is then cancelled counts as
a full practice
25 Days from release to file an injury grievance
Mandatory days off: 1 in every 7 days, at least 5 days off during camp
HGH Population Study blood sample to be done during Training camp Date TBD
DEFINTION OF WALK THROUGH:
(Article 23 sec. 6)
The second practice on the same day may only be for a maximum of the remaining available on-field time, and shall be limited to only "walk-through" instruction (i.e., no helmets, full-speed pre-snap, and walking pace after the snap).