What are people doing when washing hands for a long time?
Options:
- thinking
- sleeping
- use soap
- irritation
- cleaning dirt off
Thinking can be done at the time of washing hands. When people are washing hands for a long time, they are thinking about something.
thinking

When stressed, what will the result of exercising often be?
Options:
- heart attacks
- busy
- good health
- relaxation
- tiredness
If a person is stressed, he needs to get relaxation. When stressed, relaxation is often be the result of exercising.
relaxation

What do all humans want to experience in their own home?
Options:
- wealth
- feel comfortable
- work hard
- lay eggs
- fall in love
Humans want to feel comfortable in their own home.
feel comfortable

What would humans do when their legs are tired?
Options:
- sit down
- make mistakes
- have sex
- reproduce
- excrete

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
Humans sit down to relax when their legs are tired.
sit down