The Jets are having their Organized Team Activities this week — a stilted, formal title in a league that loves them — and Mark Sanchez, fresh off his knee surgery this off-season, is fully a part. “I’m doing more than anybody thought I would do,” Sanchez told the Star-Ledger, which means they must have thought he’d be cryogenically frozen, considering he hasn’t even started sprinting yet. What really matters is that his knee isn’t swelling; that’s a good sign, apparently. This is the first of about 53,294 updates on Mark Sanchez’s knee that you’ll get between now and September, so brace thyself.