Fitness journeys
Compare fitness routes side by side
Two or three routes at a time, with the basis for every rating shown.
Pick two or three routes. Ratings are an editorial summary of cited sources, not measurements; each cell states its basis. Stages, injuries and mistakes are on each route’s own page.
Radar of the four rated dimensions
- Bodybuilding
- Combat sports
- Harsh environments
Showing Bodybuilding, Combat sports, Harsh environments. Outer ring = Very high, inner ring = Low. A larger shape means more of that dimension, not a better route.
Side by side
| Dimension | Bodybuilding | Combat sports | Extreme discipline | Harsh environments | Social trends | Calisthenics |
|---|---|---|---|---|---|---|
| Mental demandHigher means the sources describe a heavier psychological load. | Moderate thin basisDietary precision and body-image load are named; no level is stated in the sources. | HighSources describe it as high: contact, fear management, ego, slow progress. | HighSources describe it as high: selection dropout is well documented. | Very highSources describe it as very high; 36% dropout in a 690 km Arctic race. | Moderate thin basisBody-satisfaction fell after fitspiration videos (d = 0.47), but training demand itself is not described. | Not enough evidenceNot enough evidence: no source read measures the mental demand of calisthenics. |
| Energy-deficit pressureHigher means larger or more frequent deficits are part of the route. | ModeratePlanned deficits of about 0.5-1% of bodyweight a week in prep; the bulk is a surplus. | HighRapid weight cuts of about 5% in under 24 hours are documented in boxing, judo, MMA, taekwondo and wrestling. | Moderate thin basisPowerlifters manage weigh-ins; no sourced surplus or deficit figure. | Very highAbout 1,788 kcal a day deficit among Arctic ultramarathon finishers; low energy availability flagged. | Low thin basisNo sourced energy figure for trends. | Not enough evidenceNot enough evidence: no calisthenics-specific energy figure was found. |
| Muscle-size emphasisHigher means muscle size is more central to the route's aim. | Very highMuscle size is the product. | HighKickboxers described as mesomorphic with well-developed muscle and low body fat. | ModerateRelative-strength regimens favour strength per kilogram over maximal mass. | LowLean, with muscle loss under prolonged deficit and altitude. | Low thin basisNo sourced emphasis on muscle size; the content sampled is mostly time-lapse. | Not enough evidenceNot enough evidence: short trials show push-ups can match bench press for muscle thickness, but no source rates how central size is to the route. |
| Documented injury burdenHigher means more or worse injuries in the studies read. Units differ across studies, so this is a rank, not a rate. | Moderate thin basisNo bodybuilding rate exists; strength-sport rates (1.0-4.4 per 1,000 hours) used as a proxy. | Very highBoxing pooled at 233.3 per 1,000 competition exposures; 59.2% of BJJ practitioners injured in six months. | HighPowerlifting 1.0-4.4 per 1,000 hours with 70% point prevalence of painful conditions in one report. | High64.6% of 1,212 ultrarunners had an injury with lost training days in a year; stress fractures 5.5%. | Low thin basisNo trend-specific injury rate; CrossFit self-report said similar to most sports. | High thin basisSurvey shares (59% of 181 Dutch athletes; 74.3% of 543 needed training modification or treatment), not rates; units differ from the other routes. |
| Protein cited | 1.6-2.2 g/kg/day | 1.4-2 g/kg/day | 1.4-2 g/kg/day | 1.4-2 g/kg/day | not applicable | 1.4-2 g/kg/day |
Scale: 1 Low to 4 Very high. Injury figures use different units across studies, so that row is a rank, not a rate.
Not medical advice. Published research, summarised for general information. Speak to a doctor or qualified coach before changing training, food or weight.
Why injury figures cannot be lined up
The same 59% appears for jiu-jitsu over six months and calisthenics over twelve. Different windows, populations and units make the routes unrankable by rate.
| Route study | Figure | Window or unit | Sample |
|---|---|---|---|
| Jiu-jitsu (survey) | 59.2% injured | 6 months | 1,287 adults |
| Calisthenics (survey) | 59% injured | 12 months | 181 Dutch adults |
| Boxing (pooled) | 233.3 | per 1,000 competition exposures | 14 studies |
| Powerlifting (review) | 1.0 to 4.4 | per 1,000 training hours | 7 reports |
| Ultrarunning | 64.6% injured | 12 months | 1,212 runners |
Sources: Moriarty 2019, Mohammad 2025, Boxing injuries 2023, Lifting injuries 2024, ULTRA study 2014
A 2020 International Olympic Committee consensus statement exists because studies define health problems, exposure and risk differently, and it asks for consistent definitions so data can be compared Bahr 2020. The studies above were not designed to match, so we show a rank, never a rate ratio.
Time-loss counts miss most overuse problems
In one 13-week study of 313 athletes, standard time-loss recording caught 40 overuse injuries where a weekly questionnaire found 419 problems.
- 419knee, lower-back and shoulder overuse problems found by the questionnaireClarsen 2013
- 40overuse injuries found by standard time-loss recording, same athletesClarsen 2013
- 39%athletes with an overuse problem in an average week; 13% substantialClarsen 2013
- 36%volleyball players with knee complaints on average in a later five-sport studyClarsen 2015
Which definition a study uses can matter more than the sport. A review of weightlifting and powerlifting found powerlifting incidence of 1.0 to 4.4 injuries per 1,000 training hours, yet a 70% point prevalence when injury meant any painful condition that impairs training Lifting injuries 2024. The same sport produced both numbers.
Routes with mostly survey data (calisthenics, jiu-jitsu) are measured more like the second kind, and routes with clinic or event records are more like the first.
Who is in the sample, and what is only an association
Injury studies here are mostly self-selected volunteers and observational. They show links with weight cutting or training load, not proof of cause.
| Study | Sample | Result | Limit |
|---|---|---|---|
| Doherty 2025 | 172 responses, 155 athletes, 24 combat events | 49% reported injury; odds 1.20 per 1% weight lost in the last 24 h (men) | Self-report, 7 days after |
| Hammer 2023 | 67 collegiate wrestlers, 163 seasons | 53 injuries; hazard 1.11 per 1% body weight lost | One level of sport |
| Moriarty 2019 | 1,287 jiu-jitsu practitioners | Lower injury with more years trained and higher weight | Survey, survivors |
| Chen 2025 | 16 trials in contact sports | Strength programs cut injuries, RR 0.70 | Programs, not hobby lifting |
Sources: Doherty 2025, Hammer 2023, Moriarty 2019, Chen 2025
People who got hurt and quit are missing from experience-level comparisons. Moriarty's finding that injury falls with years trained can partly mean the injured left. That is our reading, not the authors'.
Why time-to-skill is not comparable either
A meta-analysis finds practice explains 18% of sports performance differences overall and 1% among elite athletes. Milestones also differ by route.
- 18%share of performance variance explained by deliberate practice across sportsMacnamara 2016
- 1%same measure among elite-level performersMacnamara 2016
- 35 vs 26mean peak age in powerlifters vs weightlifters, yearsSolberg 2019
The practice meta-analysis also found that higher-skilled athletes did not start earlier in childhood than lower-skilled ones Macnamara 2016. So hours alone are a weak yardstick. A first meet, a first belt, a first muscle-up and a first ultramarathon are different kinds of milestones with different gates.
We found no published like-for-like study of time to milestones across these six routes. The stage lengths on the route pages are editorial estimates, labeled as such, and the compare page should be read with that in mind.
How to read the four ratings
The 1 to 4 ratings are editorial ranks built from the evidence shown, flagged thin where the basis is thin, and blank where nothing was found.
- A rating is a rank among six routes, not a measurement, and it does not mean one route is safer or better for you.
- A 'thin basis' flag means one or two studies, or a proxy from another sport.
- 'Not enough evidence' means we found no usable source, not that the route scores low.
- Do not average the four columns. Mental load, energy deficit, muscle emphasis and injury burden measure different things.
- Cross-route injury rankings use study-specific units, so a route can sit above another even when no like-for-like rate exists Bahr 2020.
More sources
13 more sources read for this page
- Moriarty et al. 2019: Injury rate and pattern among Brazilian jiu-jitsu… accessed
- Mohammad et al. 2025: Injury incidence and patterns among Dutch calisthenics… accessed
- Incidence rates and pathology types of boxing-specific injuries: systematic… accessed
- Injuries in weightlifting and powerlifting: an updated systematic review (2024) accessed
- Health and exercise-related medical issues among 1,212 ultramarathon runners… accessed
- International Olympic Committee consensus statement: methods for recording and… Journal article or official page; accessed
- Development and validation of the OSTRC overuse injury questionnaire Journal article or official page; accessed
- The prevalence and impact of overuse injuries in five Norwegian sports Journal article or official page; accessed
- Rapid weight changes and self-reported injury in combat sports athletes: a… Journal article or official page; accessed
- In-competition injury risk and the degree of rapid weight cutting in division I… Journal article or official page; accessed
- Adherence to strength training and lower rates of sports injury in contact… Journal article or official page; accessed
- The relationship between deliberate practice and performance in sports: a… Journal article or official page; accessed
- Peak age and performance progression in world-class weightlifting and… Journal article or official page; accessed
Keep exploring
- Gym membership cost: 13 US gyms we read, chain by chainAdd fees to dues for a first-year cost and read the cancellation wording.
- Strength-to-weight calculator: DOTS and IPF GLScore a total with DOTS and IPF GL and see how strength scales with bodyweight.
- Bodybuilding journey: bulk, cut and what muscle for show costsStage-by-stage bulk and cut route to a muscular…
- Calisthenics vs weights: trials, injuries and costCalisthenics versus weights in short trials: strength…