As I got into the Hive through the women's bathroom, I noticed that my health was not the usual 100, but 125. I did check a few doors and toilets on my way through, but doing so after I noticed the change in health didn't get me another bump upwards. I have thus no idea about what happened there.
Why is my health suddenly 125? Excluding hypostims and other health items (I don't recall using any), what does bump your health beyond 100?