Carrying your baby more reduces the amount of time that babies spend crying. This is especially beneficial at 6 weeks of age when babies tend to be the fussiest. If you hold your baby for an additional 2 hours, your baby will cry for 1 hour less.
Citation: Hunziker, UA, et al. Increased Carrying Reduces Infant Crying: A Randomized Controlled Trial. Pediatrics. Vol. 77. No. 5. May 1986: 641-648.