# Polar Nightly Recharge API

**Canonical:** https://apis.io/apis/polar/polar-nightly-recharge-api/  
**Provider:** Polar — https://apis.io/providers/polar/  
**Base URL:** https://www.polaraccesslink.com/  
**Documentation:** https://www.polar.com/accesslink-api/

Polar Nightly Recharge API is one of 19 APIs that [Polar](https://apis.io/providers/polar/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification and an AsyncAPI event-driven specification. Tagged areas include Nightly Recharge. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, an AsyncAPI specification, and code examples.

Nightly Recharge™ is a recovery measurement that shows how well your body recovers from daily training and stress. It is based on heart rate variability (HRV) and overnight heart rate data. The higher the Nightly Recharge score, the better your body has recovered. For more detailed information please check [Nightly Recharge](https://support.polar.com/e_manuals/unite/polar-unite-user-manual-english/nightly-recharge.htm).

## Machine-readable artifacts (8)

- **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/polar/refs/heads/main/openapi/polar-nightly-recharge-api-openapi.yml
- **Documentation** — https://www.polar.com/accesslink-api/
- **AsyncAPI** — https://raw.githubusercontent.com/api-evangelist/polar/refs/heads/main/openapi/polar-accesslink-webhooks-asyncapi.yml
- **Portal** — https://admin.polaraccesslink.com/
- **CodeExamples** — https://github.com/polarofficial/accesslink-example-python
- **TermsOfService** — https://www.polar.com/en/legal/polar-api-agreement
- **GraphQL** — https://raw.githubusercontent.com/api-evangelist/polar/refs/heads/main/graphql/polar-graphql.md
- **Documentation** — https://www.polar.com/teampro-api/

## Other Polar APIs (12)

- [Polar BLE SDK](https://apis.io/apis/polar/polar-ble-sdk/)
- [Polar Cardio load API](https://apis.io/apis/polar/polar-cardio-load-api/)
- [Polar Continuous Heart Rate API](https://apis.io/apis/polar/polar-continuous-heart-rate-api/)
- [Polar Daily activity API](https://apis.io/apis/polar/polar-daily-activity-api/)
- [Polar Daily activity (deprecated) API](https://apis.io/apis/polar/polar-daily-activity-deprecated-api/)
- [Polar Elixir™ Biosensing API](https://apis.io/apis/polar/polar-elixir-trade-biosensing-api/)
- [Polar Exercises API](https://apis.io/apis/polar/polar-exercises-api/)
- [Polar Exercises (deprecated) API](https://apis.io/apis/polar/polar-exercises-deprecated-api/)
- [Polar Physical info API](https://apis.io/apis/polar/polar-physical-info-api/)
- [Polar Physical info (deprecated) API](https://apis.io/apis/polar/polar-physical-info-deprecated-api/)
- [Polar Player training sessions API](https://apis.io/apis/polar/polar-player-training-sessions-api/)
- [Polar Pull notifications API](https://apis.io/apis/polar/polar-pull-notifications-api/)

## Tags

Nightly Recharge

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/polar/polar-nightly-recharge-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/polar/.