BS, okay weight might not be the issue, but conditioning is:
Second-round WR Alshon Jeffery missed the majority of Bears minicamp with a lower-leg injury.
Jeffery apparently got in limited work on Tuesday and Wednesday before sitting out entirely on Thursday. It's a concern for a player who has struggled with his conditioning, but Jeffery was durable in college, missing just one game in three seasons. He's expected to be fine for training camp.
Conditioning and weight are closely tied though, he might only be 216, but that's not necessarily a good 216. Maybe it is though. But if the guy is not in good enough condition then he's not going to be contributing at a high level, even for rookies.