STILL IN MOTION
Because slowing down isn’t in the plan.
THURSDAY DEEP DIVE: THE STRENGTH MOVE
Sunday introduced the Low-Load High-Rep Circuit as the heat-adapted strength structure. Today we provide three complete heat training protocols for different goals.
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PROTOCOL 1: THE 14-DAY ACCLIMATIZATION BLOCK
45 to 60 minutes in warm conditions daily for 7 to 14 days
Intensity: Zone 2 only. No high-intensity work during acclimatization.
Modality: any sustained cardiovascular activity — walking, easy cycling, easy rowing
Do not use fans or air conditioning during the session — the thermal stress is the adaptation signal
Heart rate will be 10 to 15 bpm above normal Zone 2 range for the first several days. This normalizes as acclimatization proceeds.

PROTOCOL 2: HEAT MAINTENANCE (AFTER ACCLIMATIZATION)
Normal training schedule at normal intensity performed in warm conditions
Reduce total volume by 10 to 15 percent on days above 95 degrees Fahrenheit
Use the Low-Load High-Rep Circuit during the hottest part of the day; reserve high-intensity intervals for early morning or evening
Electrolyte supplementation on any session longer than 45 minutes

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PROTOCOL 3: EARLY MORNING HIGH-INTENSITY
Perform the 4x4 interval protocol (Issue #36) between 5:30 and 8:00 AM before peak temperatures
Pre-cool before any afternoon high-intensity session: a cold shower 20 minutes before exercise reduces cardiovascular drift during the first 20 minutes
Zone 2 sessions can be performed at any time of day once acclimatized

COMING UP
Saturday closes out the Issue with the heat training toolkit, cooling gear, electrolyte strategy, and the heat illness warning signs every active adult over 60 should know.
Still moving forward,
— The SIM60 Team
simsixty.com · Because slowing down isn't in the plan.
Educational content only. Not medical advice. SIM60 is not a medical provider and does not diagnose or treat any condition. Consult your physician or a licensed physical therapist regarding your specific symptoms before beginning any exercise described here.
SIM60 receives no commissions or affiliate compensation for any equipment referenced. All mentions are for illustration purposes only.


