🔒 Business

LGPD for personal trainers: what you need to know about client data

You're handling sensitive data — probably without realizing it

Progress photos, intake forms, medical clearance, body fat percentage, health history: trainers collect a huge volume of personal information — and much of it is classified as sensitive data under Brazil's LGPD (Law 13.709/2018), which demands extra care. Ignoring this exposes you to complaints, fines, and lawsuits. The good news: getting compliant is simpler than it looks. (This content is informational, not legal advice.)

What counts as personal data vs. sensitive data

  • Personal Data: name, phone, email, address.
  • Sensitive Data: information about health (intake forms, medical clearance, injuries, %BF, measurements, photos revealing physical condition). Has extra protection under the law.
Almost everything a trainer collects about a client is health data — and health data is sensitive.

The principles you need to follow

  1. Consent: collect data with clear consent, especially for photos and health information. Use a written consent form.
  2. Purpose: only use the data for what was agreed on (tracking the workout) — not for posting on social media without specific permission.
  3. Minimization: collect only what's necessary.
  4. Security: store it securely (not in an open WhatsApp group, an unlocked phone gallery, or a public spreadsheet).
  5. Data subject's rights: the student can request access, correction, or deletion of their data.

Progress photos: the trickiest part

Using a student's photo as content (marketing) requires specific consent for this purpose — different from consent to being followed. Without it, even if the result looks great, you're exposed. Have a separate, revocable image usage waiver. Here's how that fits into your Instagram marketing safely.

Real risks of non-compliance

  • Client complaint and to the ANPD.
  • Administrative sanctions and fines provided by law.
  • Lawsuit for emotional damages (e.g., a leaked photo or one used without consent).
  • Reputation damage — the worst thing for a trust-based business.

Quick fit-check checklist

  • Separate consent form (health data) and image release form.
  • Secure storage, with restricted, password-protected access.
  • Clear data-deletion policy for when a client leaves.
  • Avoid sending sensitive data through open apps/group chats.

How Trainer Connect helps

  • Secure storage: data and photos with restricted access, encryption, and role-based controls.
  • Consent and deletion: the student gets their own app and can request data deletion.
  • Everything in one place: no more scattering sensitive data across WhatsApp and your phone's photo gallery.

Create your free account →

Trainer Connect is GDPR/data-privacy compliant

Encrypted data, built-in consent form, students control what they share.

View app Privacy policy

Keep reading