Ok do two days ago I went on a diet and started to exercise. I had not exercised in a year and I web straight into it with 50 push ups, sit ups, jumping jacks and squats. I lost 3.4lb in 2 days but here is the problem. After my workout I felt twitches in my foot which after about 12 hours now turned into twitches in my feet and legs. I have seen so many possibilities from dehydration to Lou gehrigs disease(I pray it's not that). So what could it be? I might be dehydrated because my lunch made my bm's loose an I went 4 times(sorry). I have been drinking water(3 water bottles) and my pee is a light color now. Could it be lack of say vitamin d or downright because of my diet? Could it be because it might be unhealthy to lose that much in 2 days? I also noticed that when I think it stopped but then it starts again, a wave of fear(I guess) comes over me and it all comes back so could it be related to stress? Sorry for all the questions I'm just really worried!!