Crush Your Sprint Triathlon PR with the Lifestyle Intermediate 12-Week Training Plan! Are you an intermediate triathlete looking to push your limits and set a new personal record in your next Sprint triathlon? The Lifestyle Intermediate 12-Week Sprint Triathlon Training Plan is designed for athletes like you—ready to handle a heavier training load and race at your best. This structured, heart rate-based training plan helps you build endurance, power, and speed with a progressive, ...