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  1. I have taken Newtonian physics in college and have a very good understanding of forces. I have also lifted weights for 15 years. Physics and biomechanics aside, lets just think about what you said on the most basic level. The forearm must be perpendicular at some point to the force of gravity to get maximum effort on the tricep and it being parallel to the force of gravity is "working with" gravity because its going in the same direction. This makes no sense. Gravity is pulling you down. You need to keep yourself up during a dip and with your arms straight you are canceling out gravity because the force you are applying is 100% against your weight.. or gravity*mass …. therefore, with your arms fully extended, and tricep at full flex, you are under max load ( avoid locking out to keep muscle under tension and off joint). Bending down until your upper arm, not forearm, is perpendicular to gravity will take the muscle through the FULL range of motion, but the force on the muscle does not change. How could it? you are not adding any mass. Force = mass * acceleration . Acceleration is gravity give and take a lil to compensate for your motion, which should be slow and controlled to avoid injury.

  2. The issue with this "physics" is that you do not account for relativity and newtons laws. Newtons laws (the third if memory serves) state that every action has and equal and opposite reaction. The tricep extends the forearm relative to the humerus. Therefor it must also extend the humerus relative to the forearm. You are getting the exact same perpendicularity of the relevant joint but with the opposite lever. That is why the traditional dip works the tricep. Your upright version only helps to isolate the tricep by reducing involvement by the chest and delts. That is why your triceps receive a greater relative load through your preferred method.

  3. ITS PHYSICS BITCH! LOVE IT JEFF TOTALLY ROCKING. Loved the way u explained the entire workout in terms of science in physics, I actually prefer if u do more videos in that kinda style😁

  4. Sorry jeff your wrong on this one!
    Dips in most positions work triceps amazingly. They have worked great for me and i wish i had the dips machine at home earlier as its that good for me.
    Sorry cant agree on something tried and tested with results. Keep up the good work tho!

  5. I fucking love physics but holy shit this seemed over explained. I understand what the main idea is, but you coulda just said "Do the fucking dip better" lmao. I love your videos man

  6. hi jeff what would u say about squats than? the lever is the not 90 degree but the quads do most of the work on these exercise.

  7. I appreciate the channel, but as for the saying that a lot of the people are quoting down below, it was better when Jesse Pinkman did his "Yeah Science Bitch" first back on Breaking Bad.

  8. Ah, so close grip bench presses don't really work triceps and squats don't really work the quads? It all makes sense now… Wait a minute… Huh?

  9. I hate how its all over the internet, tricep or chest dips. Lol, its an upper body workout. However the support behind the body versus at the sides surely works different areas im experimenting with for now.

  10. Dips are awesome for Chest, so many years I struggled to grow my chest, Dips Definitely helped…just Lean forward and Stretch it.

  11. That's just, the correct way to do the dip. to go full perpendicular is an "impossible dip" and it's a move but is insanely hard to do.

  12. The real reason that the first example doesn't work the triceps as much is because it requires more work from the anterior deltoid, and the pecs, thus reducing the work on the triceps

  13. Correct me if I'm wrong, but in short, he's saying that dips are a bad tricep isolation exercise…nonetheless, your triceps are still being used when you dip-The percentage is simply dependant upon angles and shifting bodyweight.

  14. OMFG you have no concept of bio-mechanics whatsoever. The pivot point when doing dips is at the elbow. The lever is the humerus bone (upper arm bone). Force is applied (by gravity) applied at the shoulder end of the humerus lever in the downward direction. Force is equal to body weight (plus any weight plates minus the lower arm weight) times gravity.

    Torque = Lever Radius * Force.

     Maximum torque (and lever radius) occurs when the humerus is at a 90 degree angle to the lower arm, assuming the lower arm is perpendicular to gravity. This is countered by the Triceps muscle, NOT the anterior deltoid.

    EMG studies have shown CONCLUSIVELY that dips are one of the best exercises for stimulating the triceps.

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