Now launching

When Performance Drops, Mistakes Happen

SUSTAIN: Performance Recovery System for High-Demand Teams

Stabilizes performance in high-pressure moments and prevents fatigue from compounding over time.

Sustain Performance. Reduce Hidden Loss.

Structured performance infrastructure to restore clarity, reduce fatigue, and protect consistent output.

Stress Signal Recognition

Identify early indicators of fatigue before they impact performance.

Decision Integrity Under Pressure

Maintain clarity, judgment, and focus in high-demand environments.

Sustained Capacity

Build long-term resilience through structured recovery and stress containment.

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$2.5M

Beyond basic productivity loss, fatigue increases healthcare costs, injury-related expenses, and operational disruption for a business with 1000 employees

~$2500

Lost per employee annually. Fatigue reduces productivity, increases errors, and impacts overall performance across teams.

.05%

Fatigue mimics 0.05% BAC—doubling impairment risk.

53%

Over 50% of incidents are skill-based, meaning the risk is primarily cognitive.

Founder & Lead

Driving Clarity. Sustaining Results.

Focused on restoring capacity, reducing fatigue, and protecting performance in high-demand environments.

[headshot] image of customer (for a home inspector)






Kassie Mandseth is the founder of SUSTAIN, a performance recovery and capacity system designed for high-demand organizations. With a background in high-performance environments, she brings a practical, systems-driven approach to managing cognitive load, reducing fatigue, and improving decision-making under pressure. Her work focuses on helping organizations protect their most valuable asset, their people, by implementing structured, repeatable approaches to performance and recovery.

FAQ: Sustaining Team Performance

Key answers for high-performing teams

If this feels relevant to your team, the next step is a conversation.

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We will walk through your environment,
how SUSTAIN fits,
and what implementation would look like.