Science-Based S&C

The FXV Blog

Evidence-based articles on training, performance, and the science behind getting stronger.

April 19, 2026  ·  Training Science

Tempo Training: Does Lifting Speed Actually Matter for Strength and Hypertrophy?

The fitness industry loves a precise tempo prescription. But when you look at the actual research, the picture is more nuanced — and the findings might change how you think about time under tension.

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April 15, 2026  ·  Technology & Recovery

Your Expensive HRV Wearable Is Less Accurate Than a £65 Chest Strap

WHOOP and Oura cost up to £570 over three years. A Polar H10 costs £65 once — and it's more accurate than both. Here's what the peer-reviewed research actually shows.

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May 3, 2026  ·  Programming

Steady State Cardio Won't Kill Your Gains — But the Way You're Programming It Might

Steady state cardio gets blamed for killing gains. The science disagrees — but how you programme it around strength work absolutely matters.

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April 26, 2026  ·  Recovery & Programming

Deloads Are Not Rest Weeks

Deloads are structured reductions in volume or intensity that allow supercompensation to occur. Skip them and you accumulate fatigue faster than you accumulate fitness.

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April 19, 2026  ·  Training Science

Your 1RM Is Not the Best Measure of Strength

A big squat or deadlift number looks impressive on paper. But how fast you can express force — not just how much of it you have — is what separates effective athletes from strong ones.

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April 12, 2026  ·  Training Science

More Volume Is Not Always the Answer

When progress stalls, most lifters add sets. But the research tells a different story — and understanding it could be the thing that finally unlocks your next stage of development.

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