Vitamin c and vitamin b are examples of this kind of vitamin

Hey there!

I think your answer should be water–soluble vitamins as opposed to fat–soluble vitamins. Water solubility is something that Vitamin C and B have in common. Also, all of the different types of B vitamins are water soluble, including B1, B2, and B12. 

Hope this helped you out! :-)

Pe.dometer would be the most useful to you for monitoring heart rate.

during longer space exploration trips, crewmembers may develop vision impairment risks and short-term cardiac atrophy or a decrease in the size, strength, weight, and activity of the heart during space flight because they can experience microgravity. in addition, the long-term medical condition is loss of bone mineral density and radiation exposure.