48 year old male with high blood pressure - on Bystolic 20 mg / day for 1 year. Weight is 223, height is 5'8". Active but not exercise. Woke up at 4 am not feeling right. checked BP and it was 162 / 110. Tried to relax and then went ahead and took my Bystolic. BP lowed about 30 mins later to 155 / 95. What would make BP elevate like this? I eat good with minimal processed foods altho i did have more than usual salty foods this weekend.