One of the key effects it has is to speed up the healing process and promote strong muscle and bone growth. Doctors can prescribe it for a number of issues. It's said to speed recovery by a factor of six times http://www.webmd.com/fitness-exercise/human-growth-hormone-hgh
<blockquote class="twitter-tweet" lang="en"><p>The MRI on Kyrie Irving's left knee is considered precautionary, league sources tell Yahoo. No damage expected to be found.</p>— Adrian Wojnarowski (@WojYahooNBA) <a href="https://twitter.com/WojYahooNBA/statuses/418442184254185473">January 1, 2014</a></blockquote> <script async src="//platform.twitter.com/widgets.js" charset="utf-8"></script>
<blockquote class="twitter-tweet" lang="en"><p>Source says <a href="https://twitter.com/search?q=%23Cavs&src=hash">#Cavs</a> Kyrie Irving has left knee contusion and is questionable for THU game v ORL, reevaluated in am</p>— M.S. Boyer/J. Valade (@PDcavsinsider) <a href="https://twitter.com/PDcavsinsider/statuses/418485816403300352">January 1, 2014</a></blockquote> <script async src="//platform.twitter.com/widgets.js" charset="utf-8"></script>
He's fine <blockquote class="twitter-tweet" lang="en"><p>Scary moment but I'll be good, thanks for everyone's support and concern.</p>— Kyrie Irving (@KyrieIrving) <a href="https://twitter.com/KyrieIrving/statuses/418505104585543680">January 1, 2014</a></blockquote> <script async src="//platform.twitter.com/widgets.js" charset="utf-8"></script>