Ive done a BOOTCAMP Class before, the exercises themselves arent hard, whats hard about that type of training is that the exercises are fast paced and back to back.I did one last year, i was all cocky going into it, thinking " i lift weights", this is gonna be easy. HA! I tapped out after 20 min, walked out the front door and puked everywhere. Like i said, the exercises are easy, thier just fast paced/back to back. I STICK to weight training but its good to try something differant.