The conversation between human and AI assistant.
[|Human|] Select all sentences in the given text that start with a gerund.
[|AI|] 1. Starting with a warm-up, stretching exercises help to loosen up the muscles before working out.
2. Adding an intense workout routine to your schedule also helps to improve your overall health and wellbeing.
[|Human|] 
Select all sentences in the given text that start with a gerund.