SweatDecks Blog

Welcome to the SweatDecks wellness journal. Our team of credentialed experts -- including sports medicine physicians, exercise scientists, and master builders -- covers everything from cold plunge protocols and sauna health benefits to installation guides and product comparisons. Whether you're researching your first home sauna or optimizing a contrast therapy routine, you'll find science-backed answers here.

Interior of a wooden Finnish sauna with steam rising above hot stones

Jul 11, 2026
by SweatDecks

Sauna sweat rate: how much fluid do you actually lose?

Most people lose 0.5 to 2 liters of sweat per hour in a sauna. Here's how to measure your exact fluid loss and what to drink to replace it safely.

Read: Sauna sweat rate: how much fluid do you actually lose?

Person stepping into outdoor cold plunge tub at dawn, heart rate spike moment

Jul 11, 2026
by SweatDecks

Cold plunge heart rate spike: what's normal and when to worry

Heart rate can jump 30 to 50 bpm in the first 30 seconds of a cold plunge. Learn what's normal, what triggers the spike, and when it's a red flag.

Read: Cold plunge heart rate spike: what's normal and when to worry

Man checking heart rate on waterproof watch while sitting in cold plunge tub

Jul 11, 2026
by SweatDecks

How to monitor heart rate during a cold plunge safely

Your heart rate can spike 30 to 50 bpm in the first 30 seconds of a cold plunge. Here's how to track it accurately and stay safe.

Read: How to monitor heart rate during a cold plunge safely

Man resting in a traditional Finnish sauna with steam rising from hot stones

Jul 10, 2026
by SweatDecks

How sauna affects heart rate variability: what the research shows

Sauna sessions can raise HRV by 13 to 20% in regular users. Here's what the research shows, how it works, and how to use heat for better recovery.

Read: How sauna affects heart rate variability: what the research shows

Outdoor cold plunge tub with pump and filter system on a wooden deck

Jul 10, 2026
by SweatDecks

Cold plunge pump flow rate requirements: what you actually need

Most cold plunges need 20 to 40 GPH of filtration flow. Learn exact pump sizing, turnover rates, and what happens if you undersize. Real numbers, no fluff.

Read: Cold plunge pump flow rate requirements: what you actually need