Less time. More strength. Backed by data.
ScienceIntensiqTwo thighs, forty years apart: what one MRI tells us about strength training
A 74-year-old sedentary man and a 70-year-old triathlete. Same scanner, same slice, almost the same age — and a difference in muscle and fat so stark it became one of the most reproduced images in exercise medicine. Here is the story behind it, and what the research really says about using strength training to keep the body you have.
LongevityIntensiqThe best workout is the one you'll still be doing in thirty years
Optimal programs you abandon in six weeks beat nothing — but they lose to imperfect programs you keep doing for life. The peer-reviewed case for adherence as the single most underrated training variable.
ScienceIntensiqIt does not matter if you have never trained, or trained for thirty years
Nonagenarians tripled their strength in eight weeks. Lifelong lifters added muscle in their seventies. The body does not stop responding to honest stimulus — and the studies that prove it have been in the New England Journal of Medicine for thirty-five years.
ScienceIntensiqStop skipping leg day. Your legs are metabolic medicine
One workout protects your heart, improves glucose control, lowers blood pressure, and predicts how long you live. Most people skip it. Here's the cardiovascular and metabolic case for training your legs.
ProtocolIntensiqThe Mike Mentzer workout: Heavy Duty HIT, explained
Mike Mentzer's Heavy Duty system. One set to failure, full recovery, ruthless progression. Is still the most efficient strength protocol ever published. Here's the routine, the logic, and how to actually run it.
ProtocolIntensiqTime under tension: the honest guide to TUT, TUL, and super slow training
Time under tension (TUT) is the most misunderstood number in strength training. Here's what it actually measures, the zone that drives hypertrophy, and why super slow training is the cheat code for natural lifters.
ComparisonIntensiqStrong vs Hevy vs Intensiq: which workout log actually fits HIT?
Three apps, three philosophies. If you train high-intensity once a week, only one of them is built for the protocol you're actually running.
ProtocolIntensiqThe minimum effective workout tracker
Most fitness apps measure the wrong things in stunning detail. Here's the shortest list of numbers that actually predict whether you'll still be strong at 80.
ScienceIntensiqWhy twelve minutes a week is enough
How a single set taken to true momentary failure can deliver more strength gain than five hours of conventional gym work.
MythsIntensiqThe bulky myth: why heavy lifting won't ruin your silhouette
Bulk takes elite genetics, a decade of food surplus, and usually pharmacology. One or two HIT sessions a week build the opposite. Dense, useful muscle.
ScienceIntensiqGenetics decide your ceiling, not your slope
Whether you're built like a marathoner or a powerlifter, the slope of your strength curve is up to you. You can roughly double your starting strength on this protocol.
ProtocolIntensiqSuper slow training and the 10/10 protocol: maximum time under tension, minimum joint cost
Super slow training. Ten seconds up, ten seconds down. Keeps the muscle under tension in the hypertrophy zone while collapsing joint forces. The safest, hardest way to lift.
ProtocolIntensiqOne set to failure: what true muscular failure actually feels like
Most lifters have never taken a single set to real failure. They stop at discomfort. The line between 'tired' and 'incapable' is where the whole adaptation lives.
MindIntensiqThe mind that lifts the weight is the mind you take home
Twelve minutes of voluntary, controlled suffering rewires your relationship with discomfort. The compounding effect on focus, mood, and decisions is the real prize.
FounderIntensiqWhy I built Intensiq
I hated the gym, the gymbros, and the noise. Then I read one book. And started treating my body like a spreadsheet. This is the app I wished I'd had on day one.
StoryIntensiqA tale of two trainees
Two people, same age, same goal. Two completely different bets. Twenty years later, only one is still standing strong.
LongevityIntensiqStrong at eighty: why grip strength predicts how long you'll live
The single best predictor of mortality past 60 isn't blood pressure or cholesterol. It's how hard you can squeeze.
ManifestoIntensiqThe app is not the answer. The knowledge is.
Intensiq is a coach in your ear, not a magic pill. If you delete it tomorrow, the protocol still works. That's exactly the point. And exactly why most fitness apps will quietly fail you.
MythsIntensiqThe cardio cult is wrong. Or at least, badly incomplete.
Running won't keep you alive past 80. Muscle will. A hard look at the most over-prescribed exercise of the last fifty years.
ManifestoIntensiqWhy the fitness industry is structurally wrong
It's not a conspiracy. It's worse: it's incentives. The reason your gym, your trainer, and your favourite influencer all push the same broken advice.
LongevityIntensiqSarcopenia is reversible. At sixty, at seventy, at ninety.
The loss of muscle with age isn't a one-way road. The clinical evidence on reversing sarcopenia is, if you actually read it, almost embarrassing in its clarity.
ScienceIntensiqCardiovascular health without the cardio cult
Resistance training is, itself, a cardiovascular event. The same brutal set that builds your quads also remodels your heart. The choice between strength and heart health is a false one.
ManifestoIntensiqIt's not the app that changes you. It's the framework you can't unsee.
Once you understand fibre recruitment, failure, and recovery, you can't go back to volume training. Intensiq sells that one-way door. The software is just the handle.
ScienceIntensiqIs it strength training? Pilates, yoga, calisthenics, rowing, swimming — what counts and what doesn't
Apple Watch logs Pilates as 'Functional Strength Training.' Your yoga teacher swears it builds strength. Your rowing coach says it's a full-body workout. Here's the honest line — and what actually causes a muscle to grow stronger.
ProtocolIntensiqHow much strength training per week? The honest answer is less than you've been told
ACSM says 2–3 days a week. Influencers say 5. Bodybuilders say 6. The peer-reviewed dose-response curve says the largest gains happen between zero and roughly one short session. Everything past that is shaping the last few percent.
MythsIntensiqWhat is functional strength training, really? The term is mostly marketing — here's what actually transfers
'Functional' became the most-overused word in fitness the moment Apple added it to the Workout app. The honest definition is shorter and less flattering: strength is functional when there is enough of it.
ProtocolIntensiqThe HIT workout tracker: time under load, slow cadence, and one honest set
Every popular gym-log app is built for volume training — sets, reps, rest timers, weekly tonnage. HIT training needs none of that. It needs three numbers per exercise, and the discipline to stop the moment the muscle fails. Here's what an honest HIT tracker actually records.