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Weekly weight gain ranges from near zero to several kilos, but most short-term ups come from water, gut content, and glycogen, not pure fat.

Most people can add 0.5–2 kg in 30 days; lean gain skews to the low end when paired with strength training and a small calorie surplus.

Most people can trim about 0.5–1 kg per week with a steady calorie deficit and sensible habits.

With steady habits, most adults can lose about 6–12 kg across three months, matching safe weekly loss rates.

Most adults can lose about 2–4 kg in a month with steady habits, as long as the plan is safe and tailored to the person.

Daily kilocalorie burn depends on body size and activity; most adults maintain weight at roughly 1,600–3,000 kcal burned per day.

One kilogram of human body fat stores about 7,700–8,000 kilocalories, based on adipose tissue’s fat content and energy density.

One typical chain cheese slice has about 285 kilocalories, and toppings or style can push a slice near 300–400 kilocalories.