Write me a discussion response to: Back when I was in the Marine Corps, one of our two main fitness tests we took was the Combat Fitness Test (CFT). It included events like ammo can lifts, sprint-drags, and a maneuver-under-fire course. My total score usually remained within the same range, but depending on factors such as sleep, weather, motivation, or how I paced myself, it could vary. That variation is similar to a confidence interval, as it shows the normal range of performance I can expect. If I looked at my average CFT score, I'd say my usual "normal" result might be 10 points on either side. For regular training or checking progress, a 95% confidence level would be acceptable, as small fluctuations are expected. But if I were competing for a meritorious promotion, a high score would be a significant factor for my evaluation. I'd want a 99% confidence level, a broader range that gives me more assurance that I'm seeing my actual average performance. The concept of "wiggle room" is particularly relevant in fitness. You can't expect to hit the same number every time, but knowing your normal range helps you spot real improvement instead of random fluctuation