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Performance Stack

Science-backed strategies for sustainable high performance. No burnout, no shortcuts, no motivation fluff.

Performance Stack

+2

The Ultradian Rhythm and Your Real Focus Window

Sep 7, 2026

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2 min read

The Ultradian Rhythm and Your Real Focus Window

Your brain does not run flat all day. It cycles. Most productivity advice ignores this completely.

Asmita Semwal
Asmita Semwal

Performance Stack

+2

Cortisol Is Not Your Enemy. Chronic Cortisol Is. Here Is the Difference.

Aug 10, 2026

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3 min read

Cortisol Is Not Your Enemy. Chronic Cortisol Is. Here Is the Difference.

The same physiological stress response can sharpen you or break you. The research showsthe difference is not the stressor. It is how you interpret it.

Asmita Semwal
Asmita Semwal

Performance Stack

+2

You Will Forget 70% of What You Read Today by Tomorrow. Here Is How to Stop That.

Jul 20, 2026

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4 min read

You Will Forget 70% of What You Read Today by Tomorrow. Here Is How to Stop That.

The forgetting curve is one of the oldest and most replicated findings in cognitive psychology. Reading is not learning. What you do in the 24 hours after reading determines whether the information stays.

Asmita Semwal
Asmita Semwal

Performance Stack

+2

The Cold Exposure Stat Everyone Quotes Comes From Six Men in a Bathtub in 1977. Here Is the Full Story.

Jul 6, 2026

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4 min read

The Cold Exposure Stat Everyone Quotes Comes From Six Men in a Bathtub in 1977. Here Is the Full Story.

A wellness industry built on two small studies, a measurement nobody checked, and a sample that excluded half the population. Performance Stack went looking for the actual evidence.

Asmita Semwal
Asmita Semwal

Performance Stack

+2

You Optimise Your Sleep, Focus, and Decisions. You Have Never Optimised This.

Jun 29, 2026

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4 min read

You Optimise Your Sleep, Focus, and Decisions. You Have Never Optimised This.

The longest-running study of human happiness found one variable predicts long-term health and life satisfaction better than almost anything else. Most high performers have never tracked it.

Asmita Semwal
Asmita Semwal

Performance Stack

+2

The Six Questions That Tell You If You Are Actually on Track.

May 26, 2026

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3 min read

The Six Questions That Tell You If You Are Actually on Track.

Most performance systems fail not because the science is wrong but because no one ever stops to check whether anything actually changed. This is that check.

Asmita Semwal
Asmita Semwal

Performance Stack

Weekly frameworks to optimize your biology, psychology, and strategy for peak performance.

© 2026 Performance Stack.
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