Sometimes toddlers seem to have only two speeds: turbocharged and asleep. Their effortless ability to shift between the two makes adults envious, as little ones often recharge their batteries with only a quick nap. When toddlers become overstimulated, however, their high energy levels can drive them until they're bouncing off the walls. Sometimes parents need to help toddlers calm themselves down before someone pokes an eye out.
AAP. 2015. Early warning signs of ADHD. American Academy of Pediatrics. https://www.healthychildren.org/English/health-issues/conditions/adhd/Pages/Early-Warning-Signs-of-ADHD.aspx [Accessed January 2017]