Skipping breakfast every day as part of intermittent fasting has helped me drop 8 kg in four months and improved my focus, but I'm worried about the long-term effects on my metabolism. Some studies suggest that fasting can slow down your resting metabolic rate over time, while others show it enhances insulin sensitivity. Given the conflicting evidence, is it really safe to rely on intermittent fasting as a permanent lifestyle change rather than a temporary diet?