I did the Ultimate DVD, my usual green, yellow and blue and then arms and planking. After that I went to church and they had the blood mobile, which I had an appt for. I have always had low blood pressure but it was below 90, so I couldn't give blood. They said to wait about ten minutes and then give, so in 10 minutes it was above 90. Very strange! Not sure if it was the exercising or church!