Place the chicken breasts in a large pot. Add enough water to just barely cover the chicken along with a generous amount of salt to season the chicken (about 2 tablespoons, you won’t be eating all that salt don’t worry!). Bring to a rapid boil, then reduce the heat to low. Flip each breast over, and simmer gently, covered, for 10-15 minutes or until cooked through (160F), depending on how thick the chicken is. Transfer chicken to a cutting board, let it rest for 5 minutes, then slice or shred it.