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.
The ADDIE model of instructional design was one of the first instructional design models developed and quickly became a gold standard. Now the ADDIE training method is widely used to provide a skeleton for all types of instructional design materials creation, and the ADDIE training model is used around the world in teaching instructional design.