I hit my head and heard a crack?
Okay, this may sound stupid, but i watched a freerunning video (parkour) and decided I would at least learn how to properly roll so that I don't get hurt if I fall. So I spent some good time practicing progressively, but eventually i became sore and decided to stop. I was going down some stairs toward carpeted floor and decided to do a small jump to see if I learned anything from my practice, but I was tired, so I did a wimpy jump off the third step. However, I didn't tuck my head toward my hand and I ended up hitting my head on the ground. You are probably thinking "it's the thirds step, can't be serious ." But when I hit the side of my head (it kinda bounced, I guess, I didn't land on my head, just hit it) I saw a flash of light, like seeing stars. I also heard a crack, and that is my main concern. But, I didn't black out, my head didn't hurt, no dizziness or nausea or loss of vision, nor was there a lump. I feel fine and I think I'm fine, but I need the assurance from you guys to make sure if I'm fine or not. Could the crack have been my neck? I'm trying to break a habit of cracking my neck and am thinking my neck cracked rather than my head. I would feel better about going to sleep if someone would diagnose this situation.
Fell on the back of my head and heard crack?
In the middle of a flag football game I fell like straight to my head and heard a crack. The initial contact of course caused me to hold my head in pain but it felt better so I played again right away( I was just more shocked at the moment that it didn't hurt more) Anyway, I played for like 20 minutes more. Now, like 2 hours later, I sort of have a headache, but I'm thinking it could just be anxiety causing it. Do you guys think if something really happened, that I'd be in more pain by now?
Hit my head and heard a cracking like sound?
Well when you hit your head, it is pretty common to have a knot, but not a cracking sound. If you feel the need to visit the ER, then do so ASAP. Head injurys are nothing to mess around with. If you decide to do so, do this before you go to sleep! This is due to the fact that with any head injury there is a chance you can suffer a concussion. If you have lost consciousness, experienced uncontrollable shaking (seizure) or have a severe headache, you should for sure visit the ER.
How far away does a sniper have to be to be hit before you hear the shot?
Great question. Rifle bullet velocity varies but every standard issue modern military round starts out at a speed faster than sound which is about 1200 feet per second at sea level. I am not going to look up the specifics of a cartridge but rather deal with the broader issues. First lets establish two significant factors. Factor one is that all rifle bullets start slowing down the moment they leave the barrel. Factor two is that sound waves (for all practical purposes) travel continuously in air at about that 1200 fps. Now imagine two runners (one named bullet and the other named sound) racing each other. Bullet gets off to a very early lead but slows down continuously and in fact at a greater and greater rate. Sound starts and finishes the race at the same speed. There is a period at the start of the race where bullet is way ahead. There is a middle part of the race where sound is now going faster and is catching up with bullet but still has to overcome the initial lead. In the final part of the race sound has caught up with and passed bullet. In the first two parts of the race bullet gets there first. Only in the last part of the race will sound "finish" before bullet strike. For a modern rifle round the last part of this race is many hundreds of yards away. Keep in mind however, at short ranges even though the bullet arrives first the sound starts louder and closer so it seems as if they are simultaneous.
When walking/hiking in the woods or a forest, if one hears the "crack" of a large tree or branch breaking, but there is no time for visual detection of the falling tree/branch, what is the safest course of action to take to not get crushed by the falling large object(s)?
I'm going to assume that based on your question, the conditions of your hypothetical means that there is no overwhelming wind, which in that case, being in a standing forest is a bad idea.Limb or crown (top portion of the tree) loss is primarily due to two factors:force loading (sail area from vegetation and woody mass) acting like a simple lever; andinternal decay of the woody tissue due to physical damage, infestation or infection.Trees generally respond to force loading by the formation of additional woody structures either in a compression formation (think a wedge under under a wheel) or in a tenison formation (think a cable strung between a wall and a 45 degree flag pole).Trees like other forms of life, strive to pass on its genetic code to future generations and expend significant resources combating environmental problems of decay vectors which also generally translates to the increase in production of additional woody structures.The point is, to answer your question, a loud crack (think shotgun sound) is generally going to be the result of stress loading release at critical points of potential failure in the tree structure. Wood is resilient and unlikely to fail suddenly unless there are unusual external factors present (in which case you wouldn't be in the forest to begin with). Therefore the best strategy is to continue on your direction of travel (to get to your destination), attempt to reduce the probability of contact with a piece of the tree (known as a "widow maker") and to also build a detour of approximately 1.5 times the height of the trees from the direction of the sound of the crack should it be parallel to your direction of travel or perpendicular to your intended direction of travel. Briefly the risk can be described as:R=consequence x probabilitywhere probability is a function of distance from the failure and time within 1.5 times the height of the tree exhibiting the failure.Consequence is your potential injury or worse.
I heard a loud cracking sound in my head while meditating?
Maybe higher chakras opening. My third eye chakra either itches or causes pressure/pain. It may have been the top or crown chakra getting a blast from kundallini energy coming up for the first time from the bottom of your spine. The heat on your back may have been your heart chakra opening up, too.
My neck popped, and now it hurts to look up and turn my head to the right. What can I do to help the pain?
Try soaking in a hot tub with your neck parallel to the bottom. Try to wiggle it gently side-to-side to see if it goes back into place. (I have to do this all the time because my neck is fused.)Ice may help your inflammation.Go to a recommended chiropractor, but make sure they will take x-rays at your first visit.If this type of intervention does not help you, insist on an MRI from an orthopedic doctor or neurosurgeon. INSIST—don’t stand on your head, but insist.You have to know what’s wrong, and x-rays are just preliminary. I had a myelogram because an MRI was insufficient to diagnose me. I hope you don’t have to get that test.My MRI was delayed for far too long and my cervical fusion results have been disappointing. Fusion was necessary, due to spinal cord compression.Don’t play around with a neck injury—it can ruin you.Good luck. Get film copies of all your tests, not just the reports. You can’t imagine the potential pain in the arse it is if you neglect this.
What should I do if I cracked my neck and now it hurts?
By "cracked" I suppose you heard something go click or clunk. This in itself may be a spontaneous release. Although any release can change muscle length and then trigger aches and pains.It all depends on the type of pain. If it feels like muscle pain and soreness then likely you have a muscle strain. For home treatment you can apply ice pack, keep the head stable and get some rest. P.R.I.C.E - Protection,Rest, Ice, Compression and Elevation is the basic first aid. You can perform isometric muscle test, hold your head still with arm and move against it gently. Where you have pain is likely the muscle which is injured.For professional help your best best is a massage therapist with training in therapeutic (aka deep tissue) massage. Alternately if it feels like a bone is in the wrong place you might seek treatment from a chiropractor or osteopath.If you feel any tingling sensation or loss of feeling then you could have some type of nerve impingement in which case you should first visit a medical doctor like your primary care physician first to get a diagnosis, and then likely back to chiropractor for adjustments. Alternately go to an osteopath or chiropractor first.If you are in Silicon Valley area you can book a massage with me. Better Health Massage of Sunnyvale