High metabolism:
If a person is described as having a high metabolism, that person needs more energy to just stay alive.
Jacob should ask his primary doctor and dietician.
I'm quite confident the answer is, <u>C. Relaxation.</u> The definitions for the other options don't really mesh with the practices of <em>meditation </em>and <em>yoga.</em>
Hope I could help!!
(Please let me know if I'm incorrect in the comments below)