I know a few people with low pulse and BP. Had it for years. My father worked out almost every day and his resting pulse was about 48 to 54. His BP was 100/60 or so. I know another man who has vitals similar to yours. His docs cannot figure out why. He has a hard time causing them to increase. But, he remains healthy and extremely busy with a sharp mind.

Lifting can influence the neck because people tend to tense their neck muscles as they strain.