CARDIO & CONDITIONING

Everything FitChef knows about cardio & conditioning.

Your step target, your intensity choice, and whether cardio is helping or hurting your gains — the evidence is more specific than the argument.

The papers we actually read

Every claim above traces back to a peer-reviewed paper. No shortcuts. No cherry-picking. 6 studies analyzed on cardio & conditioning.

The Intensity Paradox: 23 Studies, 1,332 People, One Surprise The largest controlled analysis of exercise intensity in older adults found that moderate and high-intensity exercise produce statistically similar cardiovascular… Fosstveit et al. · 2024 · Scandinavian Journal of Medicine & Science in Sports · n=0

What 57 Studies Found About Your Step Count (Not 10,000) The largest step-count meta-analysis ever published found that health benefits from walking plateau at around 5,400 steps per day —… D et al. · 2025 · The Lancet Public Health · n=161

The Afterburn Effect Is Real — and It Doesn’t Matter The afterburn advantage is statistically real but clinically trivial — less than half a percent of body fat, roughly 5… al. et al. · 2023 · International Journal of Environmental Research and Public Health · n=807

The Interference Effect, Tested in 43 Studies Combining cardio and strength training has no meaningful effect on muscle growth — the difference across 43 studies and 1,090… Schumann et al. · 2022 · Sports Medicine · n=1,090

Cardio vs. Weights: The 1 kg Gap Nobody Mentions The fat loss difference between cardio and weights is approximately 1 kg across 36 studies. When total work is equalized,… Lafontant et al. · 2025 · Journal of the International Society of Sports Nutrition · n=1,564

The Constrained Energy Model: More Exercise Won’t Burn More Above a moderate activity level, your body's total daily calorie burn plateaus — additional exercise gets metabolically absorbed rather than… Pontzer et al. · 2016 · Current Biology · n=332

6 studies → 0 verified claims → 0 flagship guides → 0 quick reads. Every link traceable. Every source cited.

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