Mark Castagnini ✓

As of July 2026, @markhammercastagnini has 13,194 followers (13K) on Instagram, follows 988 accounts, and has published 877 posts. Zaver refreshes these numbers on a rolling basis.

Verified contact details for @markhammercastagnini — including business email where available — are held in Zaver, alongside contacts for 77M+ other Instagram creators. Zaver users can unlock them instantly and reach out with AI-personalized outreach. Unlock @markhammercastagnini's contact info — free trial →

@markhammercastagnini sits in the standard price tier on Zaver, based on follower scale, engagement and niche. Zaver's AI pricing model also produces a fair per-post price range with justification, so brands can negotiate from data instead of guessing. Get the AI fair-price estimate →

@markhammercastagnini's net worth isn't publicly verified, and Zaver doesn't estimate personal wealth. What can be assessed is sponsored-post earning potential: with 13K followers and a standard price tier in fitness, brand collaborations are a meaningful income stream — Zaver's AI pricing model estimates what each placement is worth. See the earning-potential estimate →

Zaver's AI authenticity check scores @markhammercastagnini 92/100, based on 20+ signals including engagement quality, follower growth patterns and signs of purchased followers. That indicates a predominantly genuine audience. Run the full authenticity check →

@markhammercastagnini's 13K followers skew 70% male / 30% female, core age group 25-34. Full audience breakdowns — age bands, gender split and country-level distribution — are part of @markhammercastagnini's report on Zaver.

Zaver lists comparable fitness creators in Australia in the "Influencers like @markhammercastagnini" section on this page, matched by niche, audience size and engagement. Zaver users can also search all 39,215 vetted fitness creators with plain-English queries.