Please choose the correct solution to the question: How can you make yourself relax and fall asleep?

Solution1: First inhale for 4 seconds, then hold your breath for 7 seconds, then inhale for 8 seconds, repeat, keep doing this until you are relaxed.

Solution2: First inhale for 4 seconds, then hold your breath for 7 seconds, then exhale for 8 seconds, repeat, keep doing this until you are relaxed.

Answer format: solution1/solution2
Answer: solution2