Weird glitches

yesterday, while playing my weekly runescape i came across a glitch. It wasn't strange to a certain extent but it was definitely weird. I was training my range from level 38 to 40. i got they levels :D yay!!! but then i got ths weird glitch :o
i got full health after i killed someething. this happened about 10 times. i was almost dead after training on the rockcrabs without armour :P
i soon found out that i had full life after i killed one. then i was losing health again, and i got another glitch. i was like wtf?!?! so i went to kill some green drags because i wanted to see if this was really happening. and wat did u know, i got full health after killing a green dragon. i didnt even have an anti-dragon sheild either...lol. but anyways...i heard there was glitches going on everywhere.my health glitch was minor compared to others.