Nicotine is the primary ingredient in tobacco products. Nicotine in medical products is used to aid in smoking cessation. Using a controlled amount helps reduce nicotine withdrawal symptoms when you quit smoking.
When to Expect Crawling to Begin. Babies typically begin to crawl between 6 and 10 months, although some may skip the crawling phase altogether and go straight to pulling up, cruising, and walking. Help your babe get ready for his crawling debut by giving him lots of supervised tummy time.
The timing of certain milestones is extremely variable, especially in the area of large motor development (such as sitting, crawling, and walking). While 9 months is the average age that babies start to crawl, it's neither unusual nor abnormal for babies to put off crawling until 11 or 12 months -- or in some cases, not crawl at all. Two main factors seem to influence when babies crawl: 1. Baby's personality.