So I am a new RN who started working 7p-7a. I asked some of my coworkers how they deal with the 12 hour night shifts and staying awake/focused. They gave me some fantastic tips about buying black out curtains, melatonin, etc and one mentioned that she takes a stimulant (prescribed of course- not illegally). She said that the only downside is that her HR is often around 90-115 because of it! I'm not looking for medical advice, but isn't this technically a huge cardiac risk? I doubt I will ever need stimulants, but I am just curious from a general health standpoint about the risks.