To be fair though, there's no advantage to having low blood pressure-- that's largely genetic it's not liking resting heart rate. In fact, if you're not normally low-- it can be a *bad* thing.
A healthy adult is 120/80 -- "Normal" is considered 110-140, and 70-90. So to get the 20 pts here someone has to have what would disturb a dr if it's not normal. (Speaking as someone with low blood pressure who has to explain I'm having no symptoms everytime I go to the doctor. Low blood pressure can be a sign of a problem - such as underactive thyroid.)
Prehypertension is 120-139 and 80-89.
Hypertensions is 140/90+
I think this challenge would be more "healthy" if it was --
Under 120/80 - 20 pts
Under 139/89 - 10 pts
But that's just my opinion