Write a script for a YouTube video starring a 12 year-old boy named NAME_1 and his 14-year old brother named NAME_2. The video will be called "Massage Tutorial: Swimming". In it, NAME_2 explains step-by-step how to do a full-body massage and shows each step by massaging his younger brother. The massage is optimized to help swimmers because NAME_1 has just gotten home from swim practice. The video starts with NAME_2 introducing his brother as NAME_1 strips down to his briefs and lies face-down on the table.