The problem Stride solves

1. Lack of Motivation to Stay Fit
   Many people struggle to stay consistent with their fitness goals due to a lack of tangible incentives or milestones.

2. Difficulty in Staying Accountable
   Problem: Without accountability, people often drop out of fitness routines.

3. Limited Sense of Community in Fitness Journeys
   Problem: Working out alone can feel isolating, leading to reduced consistency.

4. No Real Rewards for Fitness Achievements
   Problem: Most fitness apps or programs don't offer tangible rewards for achievements.

5. Monotony in Workouts
   Problem: Repeating the same routines can feel dull, causing people to lose interest.

6. Tracking Progress is Often Boring or Complex
   Problem: Tracking fitness milestones can be tedious, and many apps are too complicated

Challenges I ran into

Integrating Google Fit or other fitness data APIs was time-consuming and required OAuth 2.0 setup and API handling, but obtaining the required tokens (e.g., access tokens) proved tricky.

Writing smart contracts that handle staking, participant tracking, and slashing for incomplete challenges while ensuring fairness and security was a steep learning curve.