Boot camps provide social support for those taking part. This provides a different environment for those exercisers who get bored in a gym and so find it hard to develop a habit of exercise.[26] Participants make friends and socialize as they exercise, although how strict the trainers or drill instructors in charge can be will depend on the company running the camp. Members of fitness boot camps are usually tested for fitness on the first day and then retested at the end of the camp, which usually runs for between 4 and 6 weeks.