High-intensity interval training
Every recorded take from the experts Cited tracks — each with the exact quote, source, and timestamp.
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In a protocol
Do weekly HIIT (e.g., assault/airdyne bike, rower, or sprint/jog intervals): 20–30 sec near-max effort, 10 sec rest, 8–12 rounds to elevate heart rate near max once a week.
“20 to 30 second all out sprint... 10 seconds rest
HL▶ 1:15:00Dosage8–12 rounds of 20–30 sec near-max + 10 sec restCaveatsAvoid true 100% sprints if form can't be maintained — risk of sciatica/pelvic floor painCertaintyexplicitstrong endorsement -
Organic (prompted) Alternative
HIIT may be as effective as zone 2 for cognitive benefits and saves time.
“high-intensity interval training is probably just as good as zone 2 cardio
BG▶ 46:40CaveatsExtrapolation from young adult studies.Certaintyhedgedrecommendation -
In a protocol
Include a 10-minute HIIT session of four rounds at 60 seconds on, 60 seconds off, for cardiovascular efficiency.
“four rounds of 60 seconds on, 60 seconds off
TD▶ 55:30Dosage10 min: 4 rounds of 60s on / 60s offCertaintyexplicitrecommendation -
Alternative
HIIT may especially benefit those reducing alcohol use via FGF21 and BDNF elevation.
“high-intensity interval training, or HIIT, may also offer an especially potent benefit
FO▶ 3:09:40CaveatsNot yet studied in RCTsCertaintyhedgedrecommendation -
Organic (prompted) In a protocol
True HIIT: 1-4 min at 80%+ effort with variable recovery — e.g. 400s or 800s on a track.
“one to four minutes of 80% or more
HL▶ 50:30Dosage1-4 min at 80%+, variable recovery, 1-2x/weekCertaintyexplicitstrong endorsement