Recent research on the benefits of lingual resistance exercise suggests that strength-building exercises for the tongue increase lingual muscle strength and mass and improve the timing of the swallowing components in healthy older adults. (Senescent Swallowing: Impact, Strategies and Interventions. Denise Ney, PhD, Jennifer Weiss, MD, Amy Kind, MD, JoAnne Robbins, PhD).
https://www.acsm.org/docs/brochures/resistance-training.pdf