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New: 10-Day Youthspan Challenge

Transform Your Health with the 10-Day Youthspan Challenge

Try the complete health tracking system based on Siim and Inka Land's proven methods. Track daily habits, journal your progress, optimize your energy & help defy aging, all in one simple app.

Try the complete health tracking system — your progress is saved locally.

Your Complete Health Tracking & Journaling Platform

More than just an app, Youthspan is a complete system that combines daily habit tracking with guided reflection to accelerate your health transformation.

Complete Habit Tracking

Track all 12 evidence-based habits from the Youthspan protocol: morning routines, training sessions, nutrition, and evening wind-down practices.

Daily Health Journaling

Morning gratitude and focus prompts, plus evening reflection questions designed to build self-awareness and track your mindset alongside your habits.

Visual Progress Insights

See your health journey unfold with completion percentages, habit streaks, and comprehensive weekly reports that show exactly how you're improving.

Evidence-Based Protocol

Follow the exact daily tracking system that Siim and Inka Land use personally. No guesswork, just proven habits that support longevity and vitality.

Grounded in numbers that matter

The protocol, the research, and the habits — at a glance.

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Days

In the Youthspan challenge

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Habits

Evidence-based daily practices

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Biomarkers

Referenced in the protocol

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References

Scientific citations behind it

Why This Tracking System Works

Built on Siim & Inka's personal optimization research and real-world testing.
1

Morning Health Tracking

Log your hydration, sunlight exposure, and movement to establish healthy circadian rhythms and sustained energy levels throughout the day.

2

Daily Habit Monitoring

Track training sessions, nutrition choices, stress management, and hydration with detailed progress visualization and completion tracking.

3

Evening Reflection Journal

End each day with guided journal prompts that help you process lessons learned, celebrate wins, and set tomorrow's health intentions.

About Siim & Inka

Meet the biologically youngest couple in the world
Siim Land portrait

Siim Land

Longevity author · 9× bestselling health writer

  • Top 1% Lowest Biological Aged Male (Biologically 12 years old)
  • Top 1% in VO2 max of males (superior cardiovascular fitness)
  • Top 5% in muscle mass
  • Top 1% in low visceral fat
  • Top 1% in over 100 biomarkers
  • Author of world's largest longevity book (8,000 scientific references)
  • 9-time bestselling health author
Inka Land portrait

Inka Land

Clinical nutritionist · Neuropsychologist · TEDx speaker

  • Achieved Highest Age Reduction (Biologically 16 years old)
  • Reversed 4 Chronic Health Conditions
  • World Leader in VO2 max (superior cardiovascular fitness)
  • World Leader in muscle mass preservation
  • World Leader in low visceral fat
  • Clinical Nutritionist and Neuropsychologist
  • 2-time Best-selling health author & TEDx speaker
Cohort open — join anytime

Ready to Transform Your Health?

Join our growing community of health optimizers using our tracking system to build better habits and unlock their healthiest selves.