Introducing SUSTAIN

When Performance Drops, Mistakes Happen

SUSTAIN: Performance Recovery System for High-Demand Teams

Teach your team how to recognize declining capacity, recover effectively, and maintain consistent performance under sustained demand.

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Protect Performance. Reduce Hidden Loss.

A structured performance recovery system that helps teams recognize declining capacity, recover effectively, and maintain consistent performance under sustained demand.

Stress Signal Recognition

Recognize the early signs of declining capacity before performance begins to suffer.

Decision Integrity Under Pressure

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

Sustained Capacity

Build sustainable performance through structured recovery and capacity management.

Built for Reinforcement, Not One-Time Training

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$1M+

A typical 1,000-employee organization can lose more than $1 million annually to fatigue-related absenteeism and presenteeism.

$776,000

Of that estimated loss, $776,000 occurs through presenteeism, while employees are still at work.

.05%

xAfter 17 consecutive hours awake, performance impairment has been found comparable to a BAC of 0.05%.

2.5 - 6%

Worker productivity can decrease by approximately 2.5% to 6% depending on levels of tiredness and sleepiness.

The Story behind Sustained Performance

Driving Clarity. Sustaining Results.

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

Kassie Mandseth Creator- Headshot






Kassie Mandseth created Sustained Performance to help organizations maintain human performance under sustained demand. Through its flagship system, SUSTAIN, organizations learn practical, evidence-informed strategies to recognize declining capacity, recover effectively, and maintain consistent performance in high-demand environments.

Having worked in high-demand operational environments herself, Kassie understands that technical skill alone is not enough. Sustained performance depends on the ability to recognize when capacity is declining and recover before performance begins to suffer.
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SUSTAIN is built on one simple belief: High performance isn't sustained by technical skill alone. It also depends on our ability to recover, restore capacity, and continue performing when demand doesn't let up.
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