What Causes Shaking Of Hands And Breathing Difficulty?

Happens frequently, about the same time each day, my hands start shaking and I find myself breathing harder than normal. I take my BP and it s normal, my pulse today was 60. I thought maybe it was too much caffeine, so cut out some and started drinking more water. But today I had more water than usual and it happened again. I ate a candy bar and it s a little better but I m still a little shaky. I do take 2 BP pills a day, one in a.m. and one before bed. My BP stays normal. I also take a statin and omeprazole. I am 59 years old.