BX100

BX100 Challenge

100-Day Fitness Challenge

Only @bx.tech accounts can access this app.

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POST

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application/json

App instructions

LEADERBOARD

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Team Points

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Workouts

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total sessions

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Time Active

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combined

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Steps

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combined

Breakdown

# Participant Points Workouts Time Steps

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Activity Feed 36h

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What data do you want in your dashboard?

The challenge already syncs your workouts, steps, and calories to a central database. That might be all you need — or you might want to go further.

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Do you want to set personal goals?

The challenge scores everyone the same way (max 8 pts/day). But your personal dashboard can track goals that matter to you — running distance, sleep hours, weight targets, whatever you like.

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How technical are you?

This decides how we explain things. You can always come back and switch.

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Let's build it

What's a token?

Think of a token like a temporary wristband at an event. While you're wearing it, the server knows you're allowed in and shows you your data. When it expires, you come back here for a new one.

Your token is private — anyone who has it can see your workout data. So treat it like a password.

Your Personal Token

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The one security rule

The Golden Rule

Never paste your token directly into a chat with an AI. Why? Anything you type into a prompt can be saved in conversation logs, shared accidentally, or show up in screenshots. Instead, you'll tell Claude where to find the token, without the token ever appearing in your conversation.

We'll show you exactly how to do this in the next step — it's easier than it sounds.

Build your dashboard in Claude

Open the Claude app (desktop or web) and click the Code tab at the bottom of any conversation. This gives Claude the ability to write and run code for you.

Now here's the secure way to do it. Follow these two messages in order:

Message 1 — Give Claude your token securely:

Paste this first

Store this value as an environment variable called BX100_TOKEN. Don't display it back to me and don't include it in any code you write — always reference it as process.env.BX100_TOKEN or os.environ["BX100_TOKEN"] depending on the language.

Token: 

This tells Claude to store the token as a variable and never echo it back. Claude Code runs in a sandbox — the token stays in that session and won't leak into your conversation text.

Message 2 — Ask for your dashboard:

Then paste this

Notice the token never appears in message 2 — just $BX100_TOKEN. Claude knows to read it from the variable you set in message 1.

Dates

11 MarStart date

19 JunEnd date

100Days

8Max pts / day

How Scoring Works

Each day you can earn up to 8 points. Points come from two independent buckets that stack together — hit both and you max out the day.

💪 Activity Bucket

Each workout of 30+ minutes scores based on your average heart rate or calories burned — whichever is higher. Only one score counts per workout.

Heart rate scoring

Avg HR ≥ 70% of max8 pts

Avg HR ≥ 60% of max5 pts

Avg HR < 60% (or no HR data)3 pts

Calorie scoring

400+ kcal8 pts

300 – 399 kcal5 pts

150 – 299 kcal3 pts

Your max HR = 220 minus your age. So if you're 35, your max is 185 and 60% is 111 bpm.

Low-intensity limit: You can only count one low-intensity session per day (and max 2 in any rolling 7-day window). If you do two easy sessions, the system picks the best one.

🚶 Steps Bucket

15,000+ steps8 pts

10,000 – 14,9995 pts

7,000 – 9,9993 pts

Daily Cap

Maximum 8 points per day, no matter how hard you go. Activity and steps stack until they hit the cap.

Example Day

You go for a 45-min run. Avg HR 145 bpm. You're 35, so your max is 185. That's 78% — high intensity. You burn 420 kcal. You also walk 11,000 steps.

Activity8 pts≥70% MHR

Calories8 pts400+ kcal

Steps5 pts10k–15k

Total before cap: 21 pts → Capped at 8 pts

The Redemption Rule

Miss a day completely (0 points)? You have 7 days to rescue it.

To redeem: on any single day within that 7-day window, complete 2 separate workouts, each at least 30 minutes and scoring 5+ points individually.

3 points transfer back to your missed day

Your redemption day keeps the remainder (e.g. scored 8 → keep 5)

Maximum 2 redemptions for the entire 100 days — use them wisely

If you have multiple 0-point days in the window, the oldest gets redeemed first

FAQs

What counts as a session?

Any logged activity of 30 minutes or more. Running, cycling, gym, swimming, yoga, walking — all valid.

What if my device doesn't record heart rate?

Your session still scores — it counts as a low-intensity session (3 pts), and your calorie and step buckets still work normally.

Can I score points just from steps?

Yes. 7,000+ steps alone gives you 3 points. You don't need to do a formal workout.

What if I do three workouts in a day?

All high and moderate intensity sessions (60%+ MHR) count independently. Only low-intensity sessions are limited to one per day.

Does sleep or resting HR count?

No. Only active workout sessions of 30+ minutes count toward the activity bucket.

What time does a day end?

The system scores your day 2 hours after midnight in your local timezone — so late-night activity still counts.

What devices work?

Apple Watch, Garmin, Fitbit, Whoop, or just your phone. As long as it syncs to Apple Health (iOS) or Google Health Connect (Android), you're in.

How are split activities handled?

If you do the same type of workout twice on the same day with less than 60 minutes between them, they're automatically merged into one session for scoring.

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