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Cracking during bending is primarily due to i. Improper deoxidation of steel ii. Low Mn/S ratio iii. Low temperature rolling
It is your girlfriend.
You are craking your fingers.
Bending your fingers is a more likely reason that they are wrinkled.
basically,when you have bending suppose you take beam(I-section) and an axis along the beam now, 1.curl you fingers in the direction of bending 2.point the thumb perpendicular to your fingers 3.thumb would give you the flexural axis(bending axis)
Radial wrist deviation is a movement in the wrist, bending it in the direction of thumb
it feel's so hard
you bend it and it should make a cracking noise and turn off the lights! if it dosent work try bending it some more!
Mine is the same way, although I don't have the shoulder throbbing. My thumb cracks when I bend it, while pushing it against my index finger. In the morning or when I haven't used it much, it cracks just from bending it. If you figure this out, I'd be a happy guy, too! hahaha that's so funnie because my thumb cracks every time i bend it and i tryed putting it on my index finger and that made it crack tooo its annnoying
You can actually feel your own heartbeat in your thumb. You wouldnt get a correct pulse if you feel your heartbeat on the patient
Your thumb also has a pulse so you could be counting your own pulse beats per minute.
not enough milk in your system to support bone movement, drink plenty of milk and the cracking should go away