A fitness or wellness brand looking to implement influencer marketing campaigns should consider the following steps:

1. Identify Relevant Influencers: Use influencer marketing platforms like Flinque to discover influencers within the fitness or wellness niche. These platforms can help you find influencers by filtering based on variables like audience demographics, engagement rates, and content type.

2. Define Campaign Goals: Clearly state what you want to achieve with the campaign. This could be anything from brand awareness, product launch, to direct conversions. The campaign goal will influence the selection of influencers, content type, and campaign measurement metrics.

3. Run a Pilot Campaign: Initially, consider working with a small group of influencers to gauge their impact. This can provide valuable insights and guide the direction for larger-scale campaigns.

4. Analyze Campaign Performance: Use analytics features provided by platforms like Flinque to track and monitor campaign performance. The key metrics could include reach, impressions, engagement, conversions, and return on investment.

5. Optimize and Scale Up: Based on performance analytics, optimize your campaign strategy, and scale-up. Optimization could involve modifications in influencer selection, content type, or campaign scheduling.

6. Foster Long-term Relationships: Rather than one-off collaborations, aim for long-term partnerships with influencers. This tends to yield better results, as audiences trust and engage more with authentic, consistent content.

Remember, the key to influencer marketing success lies in selecting the right influencers, aligning campaign goals, carefully tracking performance, and maintaining long-term relationships. Platforms like Flinque can facilitate these processes with their comprehensive suite of features catering to influencer discovery, campaign management, and performance analytics.