Start here, before
your first run

Strength 10 min read Beginner strength training for runners Lift because it makes you a more efficient runner — the injury-prevention claim does not hold up in running-specific trials. And the load matters: the light circuits usually prescribed to runners sit in the category that did nothing. Read the guide → Recovery 7 min read Who should not run, and when to rest The conditions that mean see a doctor first, the symptoms that mean stop today, and how to tell tiredness from doing too much. Read the guide → Knees 11 min read Which muscles take the stress off your knees Nearly every article says weak hips cause runner's knee. The largest prospective study — 4,818 people — found hip strength did not predict it at all. What the evidence actually supports training, and why. Read the guide → Recovery 6 min read Why sleep and recovery decide your running The run is the stimulus; the adaptation happens while you sleep. How much you need, why easy days must be easy, and the signs you are doing too much. Read the guide → Air quality 7 min read Running in Delhi NCR air pollution: when to run and when to skip A runner breathes ten to fifteen times more air than someone standing still. Practical AQI thresholds, the best hours, the routes that matter, and what actually helps. Read the guide → Beginners 11 min read Your first 5K: a four-week plan for complete beginners Three sessions a week, no gym, no watch — with an honest account of which parts of this plan are evidence and which are convention, including where our own progression outruns the guidance we quote. Read the guide → Strength 7 min read Strength and conditioning for runners: a 12-week progression Five movements, two sessions a week, getting harder in a planned way. Why progression beats variety, and what to expect month by month. Read the guide → Sessions 6 min read What is a tempo run, and how do you actually pace one? The most misunderstood session in amateur running. What tempo means, how to find the pace without a lab, and the three formats that work. Read the guide → Training theory 7 min read Threshold training: the physiology, and why it is the best return on your time What lactate threshold actually is, why it moves further than VO2 max does, and how threshold, interval and easy running divide up the week. Read the guide → Technique 6 min read How to improve your breathing for running (and what actually limits you) Your lungs are probably not the problem. What breathlessness really signals, which breathing habits are worth building, and the honest evidence on nasal breathing and breathing gadgets. Read the guide → Cross-training 5 min read Incline walking: the most underrated session for runners Why walking uphill builds the calves, glutes and aerobic base with a fraction of the impact — and exactly where it belongs in a runner's week. Read the guide → Fundamentals 6 min read Why warm-up and cool-down matter — and what each one actually does A warm-up that works, in four parts. Plus an honest look at cooling down: what the evidence supports, and the one claim that does not hold up. Read the guide → Joints 13 min read Does running ruin your knees? What the research actually found Running loads the knee three times harder than walking — and per kilometre covered, no harder at all. What the evidence supports, what it does not, and why previous injury matters four to six times more than mileage. Read the guide → Longevity 14 min read How much running do you actually need to live longer? Pooled across 232,149 people, runners had 27% lower mortality — and the dose needed is far smaller than most people assume. The "too much running kills you" headline rests on a confidence interval spanning a seventeen-fold range. Read the guide → Bone health 13 min read Does running strengthen your bones? What a 2024 study shows Running builds bone in the legs and hips, does little for the spine and nothing for the arms. Bone stops responding after a few dozen loading cycles — and under-eating harms runners' skeletons far more than running does. Read the guide → Brain health 14 min read Does running protect your brain? The honest answer The observational studies say yes. The randomised trials came back empty, and the association largely disappears once you account for dementia making people inactive years before diagnosis. What running does do for your head is real, and it is not this. Read the guide → Injury prevention 13 min read What actually prevents running injuries — and what doesn’t The running-specific trials of injury prevention are almost all null — including the largest, in 720 marathoners. The useful part of this literature is the long list of things that have been disproven: shoe prescription, pronation correction, stretching, and the 10% rule. Read the guide → Recovery 8 min read Do ice baths actually work? What the research says about cold plunges Cold plunges reduce soreness — but no better than a warm bath, and a convincing placebo worked just as well. Worse, if you lift weights, regular ice baths measurably blunt your gains. Read the guide → Recovery 7 min read Is the sauna good for runners? What the evidence supports, and what it doesn’t Finnish men who used a sauna more often died less. It is a striking finding — and it is observational, from one cohort. Meanwhile the famous '32% endurance boost' is a misreading the authors themselves correct. Read the guide → Injury 8 min read What is runner’s knee, and how do you actually fix it? Pain around the kneecap is the most common running injury there is. Exercise therapy is the best-supported treatment — and the evidence behind it is weaker, and stranger, than most articles admit. Read the guide → Injury 8 min read Why does my Achilles hurt after running? Achilles tendinopathy responds to loading — but the famous protocol behind that advice was never a randomised trial, and no loading programme has been shown better than any other. Read the guide → Training theory 9 min read What is Zone 2 running? And why your watch probably has it wrong Zone 2 means at least three different intensities depending on who is talking. On a typical runner the gap between the watch definition and the physiological one is 10 to 14 percentage points of maximum heart rate. Read the guide → Race times 8 min read What is a good 5K or half marathon time? An honest look at the numbers Published finish-time data exists — and the most useful thing in it is a warning. In one large half marathon dataset the fastest men were aged 61 to 65, which tells you more about who enters races than about running. Read the guide → Nutrition 11 min read How to drink on a long run: what the evidence actually says Drinking too much has killed at least fourteen athletes; being a little dehydrated has never been shown to slow a runner down in a blinded trial. The one hard rule is that you should never finish a run heavier than you started. Read the guide → Weight and health 12 min read Does running help you lose weight? Exercise without changing what you eat produces about 1.7 kg in a year. The reason is not that your metabolism slows — the randomised evidence says it does not. It is that you eat roughly 100 calories more a day without noticing. Read the guide → Weight and health 9 min read How many calories does running burn? About one calorie per kilogram per kilometre — a rule derived from two Olympic runners in 1963. Running economy varies by around 30% between trained runners, your watch is out by roughly a third, and the afterburn is worth around forty calories. Read the guide → Weight and health 10 min read Running when you are heavier: what the evidence says BMI is a far weaker predictor of running injury than most people assume — previous injury is the real one. But there is one place the evidence is genuinely actionable, and it is your first week. Read the guide → Nutrition 7 min read Should you run on an empty stomach? You burn more fat during a fasted run. That is well established and it is not the same as losing more fat — the researchers who found it say so themselves. For runs under an hour it makes little difference. For anything long or hard, eat first. Read the guide → Nutrition 7 min read Does caffeine make you run faster? Yes, by about 0.71% in a time trial — and by about 17% in a run-to-exhaustion test. Both numbers come from the same meta-analysis of 21 trials. Understanding why they differ tells you what to expect on race day. Read the guide → Nutrition 7 min read How much protein do runners actually need? Around 1.8 g per kg per day — more than the official recommendation and less than the tub suggests. For a 70 kg runner that is 115 to 130 g, and the usual mistake is not the total but cramming it all into dinner. Read the guide →