Author
Simon Jounan
Founder of MyFightPrep · Kickboxer & Muay Thai fighter
Simon Jounan is a kickboxer and Muay Thai fighter and the founder of MyFightPrep. The app grew out of his own fight camps, where weight, nutrition, fluids and training were scattered across calendar apps, notes and spreadsheets — and making weight became something you reacted to at the last minute.
The guides on MyFightPrep are based on recognised sports-medicine guidelines and peer-reviewed research on weight loss in weight-category sports. Every guide lists its sources, and the content is updated when new position stands are published.
Profiles
Guides by Simon Jounan (20)
Amateur Boxing Weight Classes (kg & lb): 2026 Chart
Amateur boxing weight classes in kg and lb: World Boxing's 10+10, the 7+7 for LA 2028, IBA, USA Boxing, England Boxing and the 17 pro divisions.
IBJJF Weight Classes: BJJ Gi & No-Gi Chart (kg & lb)
Every IBJJF weight class in kg and lb: 9 male and 8 female divisions, gi and no-gi, how the weigh-in works and why BJJ weight cuts should be small.
Conor McGregor Weight Cut: 145 to 170 lb, What's Known
Conor McGregor's weight cut, from the 145-lb title to 170-lb welterweight: what he, his coach and nutritionist said, and 4 lessons for your own cut.
Electrolytes for Weight Cutting: Sodium, Potassium & Timing
Should you take electrolytes when cutting weight? Yes, timed right: less sodium before the weigh-in, then 50–60 mmol/L sodium drinks to refill.
How to Rehydrate After Weigh-In: 24-Hour Plan
How to rehydrate after weigh-in: fluids, sodium and carbs hour by hour, based on the ISSN 2025 position stand, with a timeline and mistakes to avoid.
How Much Water Weight Can You Lose? Day vs. Week
How much water weight can you lose? Usually 1–2% of body weight over a few days. The science of glycogen, salt and sweat, plus where it turns dangerous.
How Much Weight Can You Cut for a Fight? (By Days Out)
How much weight can you safely cut for a fight? 0.5–1 kg a week in camp and roughly 4–7% of body mass in the final 72 hours. The numbers, by days out.
Fight Camp Calories & Macros: How to Set Your Numbers
Set fight camp calories and macros step by step: maintenance, a 0.5–1 kg/week deficit, protein 1.6–2.2 g/kg, then fat and carbs. Worked example.
Kickboxing Weight Classes (kg & lb): WAKO, GLORY, ONE
Kickboxing weight classes for men and women in kg and lb: WAKO amateur (K1, low kick), GLORY and ONE limits for 2026, plus weigh-in rules and levels.
Fight Camp Nutrition: Meals & Macros for Fighters
Fight camp nutrition made practical: protein 1.6–2.2 g/kg, carbs timed around training, a sample day of meals and what to change in fight week.
MMA Weight Classes in kg & lb: UFC, ONE & Amateur Chart
MMA weight classes in kg and lb: all 15 Unified Rules classes, UFC's men's and women's divisions, ONE and IMMAF amateur limits, plus weigh-in rules.
Muay Thai Weight Classes (kg & lb): Full 2026 Chart
Muay Thai weight classes in kg and lb for IFMA, WBC Muaythai and ONE: every 2026 limit, how weigh-ins work, and how to choose a class you can make safely.
Sauna Weight Cut: How Much You Lose & Safe Limits
How much weight a sauna really takes off (about 0.65 kg in one study), why it's all water, and the safe limits for using it in a fight-week weight cut.
UFC Weight Cut: How Fighters Make Weight and the Risks
How the UFC weight cut works: morning weigh-ins, the 1-lb allowance, missed-weight penalties, and why many MMA fighters regain 10%+ before the fight.
Weight Cutting for Beginners: 6 Mistakes to Avoid
How to cut weight properly for your first fight: lose 0.5–1 kg a week in camp, keep the water cut small, and avoid the 6 mistakes beginners make most.
Combat Sports Weight Classes (kg & lb): 2026 Chart
Weight classes for MMA, pro and amateur boxing, Muay Thai, kickboxing and BJJ in kg and lb, from official rulebooks, plus how to pick the right class.
How to Cut Weight for a Fight: Safe Week-by-Week Plan
How to cut weight for a fight safely: lose 0.5–1 kg a week in camp, then a small, supervised water cut in fight week. Week-by-week timeline included.
Water Loading for a Weight Cut: Protocol & Schedule
Water loading for a weight cut: what the research shows (about 0.6 % extra loss), a day-by-day example schedule from the study protocol, and the risks.
What Is Weight Cutting? Meaning, Methods and Risks
What is weight cutting? Losing weight fast before a weigh-in, then regaining it before the fight. How it works, why fighters do it, risks and reforms.
Wrestling Weight Cut: Rules, Risks and a Safe Plan
Wrestling weight cut explained: the 1997 deaths that changed the rules, NCAA and NFHS limits (max 1.5% per week), and how to make weight safely.