I'll give you a question, please answer with step-by-step reasoning process. The exercise involved long and deep breathing, this slowed the heart and led to what?
Options:
- warm air
- stay alive
- calmness
- living
- relaxation

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Heart is slowed down when one is relaxed. Relaxation results from long and deep breathing.
The answer: relaxation.