A fat loss plan
you can actually finish.

A deficit sized to your pace

You choose gentle, steady or ambitious, and the plan sets the deficit at 250, 375 or 500 calories below your maintenance level. Steady is the default because the fastest option is the one most often abandoned, and more of what an aggressive deficit costs you is muscle rather than fat.

Protein to protect what you have

In a deficit your body is looking for energy and muscle is a candidate. Adequate protein alongside resistance training is what steers it toward fat instead. The plan sets 1.8 grams per kilogram of bodyweight, roughly 148 g a day for an 82 kg person.

Lifting, not just cardio

Cardio raises the energy you spend. Resistance training is what gives your body a reason to hold on to muscle while the deficit runs. Dropping the weights and piling on cardio is the classic route to finishing ninety days lighter but softer than you hoped, so the plan includes both, weighted toward the one that protects your result.

It adjusts for poor recovery

If you report sleeping under six hours or high stress, the deficit is reduced by 100 calories rather than ignored. An aggressive deficit stacked on under recovery tends to cost training quality and lean mass instead of speeding anything up. An honest answer produces a better plan.

Judge it over weeks

Daily bodyweight moves with water, food volume, salt and sleep, none of which is fat. Look at the trend across two to three weeks alongside how your training is going, and adjust if both have stalled. No calculator can skip that step for you.

No promises about outcomes

Rate of fat loss varies with adherence, starting point, sleep, stress and medical factors, and it is not linear. This plan gives you a structure and a set of estimates, not a guarantee, and it is general fitness information rather than medical advice. Speak to a clinician first if you are pregnant or postpartum, managing a condition, or returning from injury.

Choose training you can sustain during a deficit

The four-day fat-loss routine includes resistance training, but four days is not a requirement for losing fat. A manageable strength routine plus repeatable walking can be more practical than adding intense sessions you cannot recover from. The builder's calorie number estimates a starting intake; it does not measure your daily expenditure.

Understand the steady setting

The detailed builder subtracts 375 kcal from estimated maintenance for steady fat loss. It adds 100 kcal back when your answers report high stress or under six hours of sleep. These adjustments are planning choices, not medical thresholds. Suggested meals give food ideas and approximate illustrative food combinations, so they should not be mistaken for weighed recipes that exactly total the calorie figure.

Review trends before tightening the plan

Compare several weeks of consistent observations, not a single weigh-in. Check whether the activity level you selected describes your whole day and whether your portions are being estimated consistently. Falling strength, persistent fatigue or difficulty managing hunger are reasons to reassess the approach. The fat-loss guide gives a worked weekly check-in and explains why more cardio is not always the useful next step.

Updated 5 October 2026. Practical implementation guidance by Phasebuilt; no clinical review is claimed.

Related: how fat loss works, and how your calories are set.

Reviewed 26 October 2026 by Phasebuilt. Worked examples are fictional teaching examples, not client results or individual prescriptions. No clinical review is claimed.