Elon Musk bragged about lifting '45 lb weights' on Friday. Now he says he has to get an MRI on his neck and back and may need surgery before his cage match with Zuck.
Elon Musk.Chesnot via Getty Images
<ul>
<li>Elon Musk said he can't confirm a date for his fight with Mark Zuckerberg just yet.</li>
<li>Musk said he's getting an MRI of his neck and back, and may e… [+2505 chars]
