Biomedical scientist (PhD, research at St. Jude Children’s Research Hospital, postdoc with Bruce Ames); founded FoundMyFitness, where she reviews research on aging, exercise, heat and food
FitnessSleepFood8 ideas
Sauna is not for pregnancy or after alcohol; with a heart condition or low blood pressure, ask your doctor first.
Checked 18 Oct 2026. Each line is in our own words, with where it was said and an independent study or guideline next to it. Ties: Funded by paid memberships to her site; also sells genetics reports and clothing, and gives paid talks.
The blueprint, line by line
Habit
Sauna 4 times a week or more, about 20 minutes at around 80 °C
Mixed evidence · One Finnish cohort of 2,315 men: 4 to 7 sessions a week went with 63 % fewer sudden cardiac deaths than one a week, but only 201 men were in that group and sauna users may simply be healthier. Every mortality study so far comes from the same research group; no trial has tested it Research
Costs: about 30 minutes with cooling down; a gym, pool or public sauna, or one at home. She started lower and built up
For your blueprint
Do your heat in the evening, 1 to 2 hours before bed; no sauna? A hot bath of about 40 °C for 20 to 30 minutes, shoulders under
Mixed evidence · For sleep it holds up: a 13-study meta-analysis found a 40 to 42.5 °C bath 1 to 2 hours before bed shortened the time to fall asleep and improved sleep quality, though the studies were few and small. That a bath brings the sauna’s long-term benefits is untested; she calls it “going out on a limb” Research
Costs: 20 to 30 minutes plus time to cool down; a bath or hot tub, a thermometer helps. She does this about five evenings a week
Strong evidence · A 28-trial meta-analysis: interval training raised VO₂ max by about 5.5 points, a little more than steady training. The trials mostly ran 2 to 3 sessions a week; her “not more than 3” rests on one study and on recovery, not on a tested ceiling Research
Costs: 20 to 45 minutes with warm-up; a bike, rower, hill or stairs. She does hers in hour-long CrossFit-style sessions and on a Peloton
For your blueprint
For VO₂ max, make the intervals long, e.g. the Norwegian 4×4: four 4-minute efforts as hard as you can hold, 3 easy minutes in between
Strong evidence · Trials: 4×4 three times a week raised VO₂ max more than the same work done steadily (Helgerud 2007). In Generation 100, 1,567 people aged 70 to 77 doing 4×4 twice a week for 5 years, deaths were lower than in the control group, but not by a statistically sure margin Research
Costs: about 40 minutes with warm-up and cool-down; at 85 to 95 % of your maximum heart rate. She checks progress with a 12-minute run test
For your blueprint
If you train a few hours a week, make about half of it hard (80 % of your maximum heart rate or more), not the 80/20 split athletes use
Mixed evidence · Her opinion, beyond the guidelines. In 204,542 Australian adults, a higher share of vigorous activity went with lower mortality at the same total (observational); the WHO only counts a hard minute as two moderate ones. No trial has tested a 50 % split Research
Costs: no extra time; part of the sessions you already do gets harder
Habit
Strength training 3 times a week: big lifts like squats and deadlifts, a little heavier each set
Guideline · Her own number; the WHO asks for 2 days. A 16-cohort meta-analysis: 10 to 17 % lower risk of early death, heart disease, cancer and diabetes, the most at about 30 to 60 minutes a week; more than that showed no extra gain. Observational Research
Costs: three sessions a week; hers are an hour, 30 minutes of lifting then a circuit. A gym, or body weight at home
Habit
Exercise snacks: get your heart rate high for 1 to 2 minutes, about 3 times a day (run the stairs, squats, burpees)
Mixed evidence · In 25,241 UK adults who did no exercise, wearing trackers, 3 bursts a day of 1 to 2 minutes went with about 40 % lower mortality over 7 years. One data set, observational, and sick people move less, so part of the link may run the other way Research
Costs: a few minutes a day, no money; stairs instead of the lift, or a timer every couple of hours at a desk
Mixed evidence · A 17-trial meta-analysis: about 1.6 kg weight loss and a little better blood fats, no change in blood sugar or blood pressure. A year-long trial found it added nothing when calories were equal, so most of the gain seems to come from eating less Research
Costs: no money; e.g. breakfast at 8:00, last food by 18:00. Coffee and water outside the window are her open question, not settled
How to use this
Don't take all of it. Pick one or two lines that fit your week, try them for two weeks, and keep what works for you. That's what Vea is for: a weekly check-in that shows what each habit does for you.
Not an endorsement: these are our short summaries of what each person has published, with a link to the source. They have no connection to Vea. Ideas to try, not medical advice. On this list and want off? [email protected]