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75 Hard Challenge

A fast, accurate 75 Hard Challenge that turns your numbers into clear, actionable insight you can use today.

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Included with the Fitness pass

✦ FITNESS PASS

One pass, every included fitness tool

35 tools 30-day access 50 credits

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Instant, accurate results

Built on established fitness formulas and research.

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Clear interpretation

Not just a number — understand what your result means.

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Personalized to you

Results adapt to your age, body, activity and goals.

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Next-step guidance

Know exactly what to do with your result.

1 · Become a member

Click "Get Access Now" to join Kriyasya. One membership unlocks every premium plan, report and bundle.

2 · Sign in by email

Enter the email you joined with — we send a one-time code. No passwords to remember.

3 · Generate your plan

Fill the short form and get your personalized, printable plan in seconds.

How accurate is this?

Results use established, research-backed formulas. They are estimates for general fitness guidance, not a medical diagnosis.

Do I need to sign in?

Free tools work instantly with no sign-in. Premium tools require a Kriyasya membership and a quick email sign-in.

Is my data saved?

Calculations run in your browser. Trackers store progress locally on your device. We do not sell your data.

Use the 75 Hard Challenge to get accurate, science-backed results based on your body and goals.

Get Access Now

Included with the Fitness pass