I've been practicing some of the breathing exercises in 5-minute blocks for about a week. I feel like I'm doing something incorrectly because I'm not feeling calmer at the end of the exercise. My pulse is always quite high. I measure my pulse before and after the breathing exercises and it hardly ever lowers after the exercise (sometimes it even increases!). I've primarily been using the resonant breathing and box breathing techniques. Anyone have a tip to help me relax more during the breathing exercises and make them more effective for me?