I wish somene had showed me this when I first started to lift weights. The deltoids are affected by shoulder position and their relationship to gravity or the resistance.  This clip will enlighten you as to how this works.

Be careful of hand placement, type of bar and the client''s "carrying angle." With an excessive "carrying angle" it might be best to use an E-Z curl bar or dumbbells instead.

This is a pretty easy exercise to master. If you''''re performing bench press, incline press,  decline press, military press, push-ups dips and lateral raises you probably won''''t need to add this exercise.

Military Press should be a staple in everyone''s training. Unless of course there is an injury. Most people don''t think of Military Press as a core exercise. Holding a weight over your head is like being squashed like a bug. Your enitre body is eccentrically resisting  the force trying to squash you. Great upper body exercise. Don''t discount it as a great core exercise as well.

The hyper-extension  is a great exercise  for everyone to do. It works the back side of the body; hamstrings, glutes, spinal erectores. If you have a back pain, thiscould be a great exercise or it could be a contraindicated exercise depending on the type of the condition. Consult with your physician or fitness professional to determine if this exercise is good for you.

Great core exercise, but you must be able to stabilize the shoulder as you hang. Many people can''''t hold themselve up for that long. Mostly a hip-flexor movement unless you are anteriorly rotating the pelvis. Lower abdominals are still working as stabilizers, regardless.

This ab machine works well for people who have trouble getting up and down from the ground or they are so strong they need additional weight.

Always be careful of the spine. The foot placement is key here. Watch carefully.

The plank is a great exercise for the intrinsic musculature of the core. Make sure your elbows are stacked under your shoulders.

My favorite exercise for the posterior kinetic chain (the back side of the body). Make sure the knee caps are facing directly towards the ground. Don''t externally rotate the feet inwards or outwards.