I've been jumping and skipping around?
922459
Get it checked out by a doctor..;
901308
sounds like a possible calcaneal fracture.  you don't decribe location of pain, that would be educated guess based on description of jumping from high surface.  check out a great informative website, myfootshop.com. check out the article and see if it sounds like your symptoms, if not tool around the site, i think you'll find it to be helpful.  use the source as direct link to site.
677767
it might be some settings u have done. perhaps u can relook at it again then see if there is a reason behind any unknown functions you have yet to know. it might be handy when u relook again.
717365
This happens to me sometimes.  It is usually because I was sitting in one place for a long time.  Try changing positions every once in awhile or get up and walk frequently and see if that helps.
851345
you should talk to your doctor about it. even though you feel fine now, the doctor will tell you what to do if it ever happens again. =]
657597
i would suggest going to a doctor.  you may have strained a muscle or something worse but go soon
515714
what i would recommend is to do skipping coz it works the calfs which is important in jumping. i would also say put weights while going about your current daily exercise routine. at first you will feel like crap, but after a month, you'll get used to it. when you take it off, you'll achieve your desired result.
1165151
Don't know....go ahead and Jump?!!!
384095
If you mouse a lot or have other repetitive motions, this is a sign that your muscles and tendons may be overstrained.  Please see a doctor asap for medical treatment.  I waited too long and....OUCH!
336586
Are you nervous?? I used to do that whenever I was anxious or nervous about something. I would catch myself doing it and eventually I stopped. You just have to make a conscious effort not to do it.
888896
I would pratise on the trampoline..strenghten your legs for higher jumps
789341
I would say if it's been a while since you got up and started moving around, the feeling should be back... I would call your doctor.  It could've been like a pin stroke.
585046
wall jumps , jump more jumprope, anything that has to do with jumping
16492
Usually it's because of the mouse. If it jumps even when you don't move the mouse, try replacing the mouse. Otherwise, you may need to clean it.\n\nUmm... on second thought, it looks like you are actually talking about the keyboard cursor (also called caret)\nIn that case, it depends where you type - if you're talking about this website, it has limits for message lengths (e.g. for questions, comments, etc), and when you exceed the limit, the caret may jump back.
285091
uhmm.....I didnt hurt myself. I was really excited and happy and jumping up and down....then again I still jump up and down at church. We have very high energy church services :D
74710
If this is suspected, I would take them to the doctor at once!  Any balance abnormalities or lack of normal coordination could be a sign of a serious neurological problem.
1032801
You should probably try to eat right and exercise daily. I know a fun way to exercise your legs. Get the Dance Dance Revolution game for home and that will keep you jumping. It's fun to play, you get to listen to cool music and you get a nice workout.