Well, an increased risk would be shallow water. Ideally, you want to dive into water that's at least 5 feet deep so the risk of hitting your head isn't as great. Another could also be instead of diving straight down, dive at an angle so again, the risk of hitting your head and compressing your spine isn't as great.
Jet streams follow the boundaries between hot and cold air
<span> the answer is Osteoarthritis</span>
Where’s the story to the question?
A skill related is fitness including training to improve speed, balance, coordination, power, and finally reaction time.
Hope this helps...