The Performance Stack

No-BS systems for building elite cognitive performance and executive presence — for tech leaders who refuse mediocrity

Eating Less Kept Me Fat for 15 Years (45kg Later, I Know Why)
Ivan Aseev
Jan 27, 2026
14 min read

The worst fitness advice you'll ever receive comes wrapped in three words: 'Just eat less.' Here's why it's a systems failure—and what high-performing professionals should do instead.

Physical Fitness: Your Unfair Advantage in the Age of AI
Ivan Aseev
Jan 19, 2026
12 min read

AI won't replace you. But someone using AI better than you—because their brain works better than yours—absolutely will. Why physical fitness is becoming the biggest career differentiator for tech professionals.

Why I'd Ignore 90% of Fitness Advice If I Started Over in 2026
Ivan Aseev
Jan 12, 2026
18 min read

After losing 46kg and becoming a Certified Personal Trainer, here's exactly what I'd do differently if I started my fitness journey today—and what I'd completely ignore.

Your Neck is Sabotaging Your Career (And Science Can Prove It)
Ivan Aseev
Jan 8, 2026
12 min read

Learn how forward head posture reduces brain blood flow by 30%, throttles cognitive performance, and destroys executive presence - plus the 5-minute solution that fixes it.

Give Me 5 Minutes and I'll Show You How to Actually Keep Your New Year's Resolutions (And Why 92% of You Will Fail Without This)
Ivan Aseev
Dec 30, 2025
15 min read

Only 9% of people keep their New Year's resolutions. Learn the systematic approach backed by behavioral science that turns vague wishes into executed reality - no motivation required.