Rhodiola rosea is the adaptogen with the longest track record in genuinely demanding environments — used by Soviet military programmes and Olympic athletes since the 1940s, with a research base that has expanded steadily since.

Where Ashwagandha is the adaptogen for chronic background stress, Rhodiola is the one studied for fatigue and mental stamina.

What it supports

• Mental stamina when you're running on limited sleep or into the back half of a long day
• Studied in work-related burnout and chronic fatigue contexts
• Attention and processing speed under fatigue specifically
• Endurance performance — examined for time-to-exhaustion in athletes

How to take it

Take in the morning or early afternoon — taken late it can be too activating for some people. Look for extracts standardised to rosavins and salidroside. Effects tend to be more noticeable on demanding days than easy ones.

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