The dumbbell pullover is a compound exercise that targets both the chest and the back. This is one of the only exercises that works opposing muscle groups at the same time. The movement involves holding a dumbbell directly overhead, so start with a light weight and work your way up after you become comfortable with the exercise. Video of the Day
The term train the trainer is used to refer to the need to provide people who offer training and instruction with training of their own so that they can provide suitable education to their students. People often learn more from trainers who are experienced and who have pursued education to learn to become better at their jobs.
Other train the trainer programs provide education and certification for people who may not be required to be certified to teach, but who can benefit from acquiring skills at such a course. A typical train the trainer program introduces people to basic pedagogical or teaching concepts so that they understand how people learn and how to facilitate learning. These courses also teach people about working in groups, providing one-on-one instruction, and facilitating a pleasant time for all people involved in a training.