Enter your competition date, current body fat, and target to get a multi-phase prep timeline with weekly calorie adjustments, macro targets, and a peak week protocol — tailored to your division and diet preference.
For educational purposes only. Work with a qualified coach and healthcare provider for competition prep.
Bodybuilding: 4–6% males / 9–12% females. Bikini/Figure: 10–14%.
Minimum 4 weeks, maximum 52 weeks.
Helps calibrate starting calorie targets for each phase.
BiteKit makes it easy to log every meal during prep, hit your daily macro targets, and track body weight trends — so you stay on track from first check-in to peak week.
Contest prep is the structured process of reducing body fat to competition-ready levels while preserving as much lean muscle mass as possible. Unlike general fat loss, competitive physique prep requires achieving extremely low body fat percentages — levels that demand careful nutritional programming, progressive dietary adjustments, and a precisely timed peak week.
Done correctly, prep is a phased process that starts months out with a moderate caloric deficit and gradually increases dietary restriction as the show approaches. Done incorrectly — too fast, too extreme, or with insufficient protein — it results in significant muscle loss, hormonal disruption, and poor stage appearance.
The rate of fat loss required determines how safe and muscle-preserving your prep will be:
Ideal rate for muscle preservation. Moderate calorie deficit, minimal performance impact, and sufficient time for a quality peak week.
Standard contest prep rate. Requires disciplined nutrition but is manageable for experienced competitors. Some performance reduction expected late in prep.
Elevated risk of muscle loss and metabolic adaptation. Requires very high protein intake, careful training management, and close monitoring. Consider extending prep timeline.
Crash prep territory. Significant muscle catabolism, hormonal disruption, and poor stage appearance are likely outcomes. A longer prep or a lower target body fat is strongly advised.
Moderate deficit (300–400 calories below maintenance). Focus on building dietary habits, maintaining training performance, and setting a sustainable rate of loss.
Increased deficit and/or added cardio as body fat decreases. Protein intake increases to protect muscle as calories drop. This is the main fat loss phase.
Final 7 days: manipulate carbohydrates, water, and sodium to maximize the "dry and full" stage look. Strategy varies by division — more extreme for bodybuilding, more moderate for bikini.
The defining challenge of contest prep is losing fat while keeping hard-earned muscle. The most evidence-based strategies include:
Consume 1.2–1.6 g per pound of lean body mass throughout prep. Higher intakes (1.6 g/lb) are especially important in the final 6–8 weeks when calories are lowest.
Continue heavy compound lifts throughout prep. Training volume and intensity signal to the body that muscle is needed — reduce training only if recovery becomes severely compromised.
Target 0.5–1% of body weight loss per week. Faster deficits dramatically increase muscle catabolism. Patience is a competitive advantage in physique sports.
7–9 hours of sleep per night is critical during prep. Growth hormone release during sleep drives muscle protein synthesis. Poor sleep accelerates muscle breakdown and increases cortisol.
This tool provides general educational information only and is not a substitute for working with a qualified contest prep coach or healthcare provider. Competitive physique prep involves significant physiological stress including caloric restriction, hormonal changes, and psychological pressure. Getting regular bloodwork and consulting a sports medicine physician is strongly recommended. This tool is especially not a substitute for personalized medical advice if you have any underlying health conditions.
Most competitors need 12–20 weeks depending on their starting body fat. A general rule is to plan for 0.5–1 lb of fat loss per week. Crash preps under 10 weeks typically result in significant muscle loss and poor stage conditioning.
Open Bodybuilding men: 4–6%. Classic Physique: 5–7%. Mens Physique: 6–9%. Figure women: 10–13%. Bikini women: 12–15%. Wellness women: 13–16%. These are approximate stage-ready targets and vary by individual.
Peak week is the final 7 days before a competition where athletes manipulate water, carbohydrates, and sodium to maximize stage appearance. Typical strategies include carb depletion then loading, water loading then tapering, and sodium manipulation — all aimed at maximizing muscle fullness while minimizing subcutaneous water.
During a caloric deficit, target 1.2–1.6 grams of protein per pound of lean body mass. Higher intakes closer to 1.6 g/lb lean mass are especially important in the final weeks when calories are lowest and muscle loss risk is highest.
A standard deficit maintains a consistent daily calorie deficit. Carb cycling alternates high-carb days (on heavy training days) with low-carb days (on rest or cardio days) to support performance while creating a weekly calorie deficit. Carb cycling requires more planning but can help preserve training quality and muscle during prep.
No. This tool provides a general educational framework. Competitive physique sports involve significant physiological stress, and working with a qualified contest prep coach and getting regular bloodwork is strongly recommended — especially for your first competition.
BiteKit helps competitors track daily macros, body weight trends, and nutrition through every phase of prep — from early deficit to peak week — with AI-powered meal logging that takes seconds.
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