Behaviors

Use momentum, fast reps, or slow controlled reps selectively based on the adaptation sought. Momentum is not inherently cheating; fast reps may suit speed or power goals, while slow controlled reps may better suit other goals.

The blanket rule against training the same muscle group on consecutive days is rejected; back-to-back training can be appropriate depending on the goal and programming.

A more efficient approach can deliver the same or better results in under 30 minutes, while also improving how you feel and supporting weight loss.

Favor big movements over excessive isolation work to improve efficiency, functionality, and training economy.

For movement skill assessment, the gold standard is evaluation by a qualified physical therapist or movement specialist across patterns such as overhead pressing, squatting, and running.

Review movement one joint at a time, focusing on major joints such as shoulder, elbow, low back, hip, knee, and ankle.

For self-assessment of movement quality, record representative upper-body press, upper-body pull, lower-body press, and lower-body pull patterns from both frontal and side views. Example choices given include push-up, pull-up or bent row, squat, and deadlift.

When filming movement for assessment, perform 3 to 10 repetitions per angle, slow and controlled; bodyweight only is sufficient.

Look for symmetry front-to-back, left-to-right, and between limbs when reviewing movement video.

Look for stability by seeing whether you can control the movement slowly and hold positions without shaking or shifting. Use pauses at the bottom for 3, 5, or 10 seconds to evaluate control.

Determine whether flaws are due to lack of awareness rather than true movement limitations.

Stand still and jump forward as far as possible; measure from the start line to the back of the heel on landing. A crude benchmark is being able to broad jump approximately your body height; for females, reduce that benchmark by about 15%.

Measure standing reach with both hands together overhead, then jump from a standstill and touch as high as possible with both hands; compare jump touch to standing reach. Use a two-handed touch to reduce confounding from shoulder mobility and asymmetry. General target is about 24 inches or higher; if over age 50, closer to 20 inches is acceptable; for females, reduce targets by about 15%.

Use either a hand-grip dynamometer or a dead hang from a bar thin enough to wrap the whole hand around. For men, minimum grip strength target is about 40 kg and ideally above 60 kg; for women, about 35 kg minimum and above 50 kg is strong. Left-right difference should not exceed about 10%. For dead hang, minimum target is 30 seconds, 30–50 seconds is decent but improvable, and above 60 seconds is generally good.

Use a leg extension test as a standardized, lower-skill alternative to a back squat. A simple benchmark is a bilateral one-rep max equal to body weight; after age 40, the target can decline about 10% per decade. If uncomfortable testing a true one-rep max, use a near-max load for as many reps as possible, keeping total reps under five, then use an online calculator to estimate one-rep max; accuracy declines once repetitions exceed about five.

Hold a kettlebell or dumbbell in front of the chest and sit in the bottom of a squat to assess position, core strength, and low-back stability. Intro benchmark: one-third body weight for 30 seconds. Stronger benchmark: about half body weight for about 45 seconds.

Avoid maximal testing when technical proficiency is inadequate or injury risk is high.

Use fat-free mass index from body composition data to determine whether muscle mass is sufficient for health. For men, target about 20 or higher, with below 17 indicating severe insufficiency; for women, target about 18 or higher, with below 15 indicating severe insufficiency. Interpretation assumes body fat is probably below 30% for men and below 35% for women.

Use a front plank, side plank, and push-ups as muscular endurance tests. Targets: front plank 60 seconds, side plank 45 seconds, and if capable of doing push-ups, 25+ consecutive full-range push-ups for men or 15+ for women. For push-up testing, use full elbow lockout at the top and chest touch or close to the ground at the bottom, and do not pause; any break counts as a failed test.

If you cannot do one repetition, the issue is strength rather than muscular endurance; train maximal strength rather than high-rep assisted endurance work.

Use a Wingate test in a lab, or outside the lab use sprinting, an air bike, or a rower for an all-out effort of about 30 seconds, up to 45 seconds or even a minute, and record distance or work completed. Kettlebell swings are not preferred because too many technical variables interfere with maximal effort assessment. Use 220 minus age only as a rough predicted maximum heart rate reference.

After reaching maximal exhaustion, measure heart rate recovery as a better metric than peak heart rate itself. Target about a 30 bpm drop in the first 60 seconds and about 60 bpm by two minutes.

Gold-standard aerobic capacity assessment is a laboratory VO2 max test using a mask and gas analysis. Field options include a 12-minute Cooper run test, entering distance into an online calculator, or a Rockport one-mile walk test if hard running is not feasible, recording both time and end heart rate.

Test the area where you are weakest more often than areas where you are already strong.

Run the full battery at least annually, and every six months if possible. Complete it within a week rather than in one day; a three-day split is described as probably best.

Place body composition testing first in the assessment sequence because acute exercise can distort results via inflammation and water storage. Avoid hard exercise the day before, and preferably for 48 hours before, a body composition test.

Perform movement assessments when fresh rather than when sore or fatigued.

Place skill, max strength, and power testing early in the day before fatigue accumulates.

Place highly fatiguing assessments later in the day.

If combining lower-body and upper-body strength tests on the same day, allow roughly 15 to 20 minutes between them.