<human>: Objective: Learn how to monitor heart rate.

Which of the following solutions is more sound in terms of naive physics reasoning?

OPTIONS:
- Place your index and third finger against your neck. You should feel a light beating. This is your pulse.
- Place your index and pinkey finger against your bicep. You should feel a light beating. This is your pulse.
<bot>: Place your index and third finger against your neck. You should feel a light beating. This is your pulse.