1. Reale, R., Slater, G., Burke, L.M., Individualised dietary strategies for Olympic combat sports: Acute weight loss, recovery and competition nutrition. Eur J Sport Sci, 2017. 17(6): p. 727–40.
  2. Fogelholm, M., Effects of body weight reduction on sports performance. Sports Med, 1994. 18(4): p. 249–67.
  3. Reale, R., et al., The Effect of Water Loading on Acute Weight Loss Following Fluid Restriction in Combat Sports Athletes. Int J Sport Nutr Exerc Metab, 2018. 3: p. 1–9.


Please keep questions on topic, write clearly, concisely, and don't post diet calculations.


Privacy policy.

newest oldest

Hi Andy,
Just a quick question, do you see a slight trend up on Monday/Tuesday with your weight before dropping? I’ve come up 1.5 lbs since Sunday.

Thank you,

Andy Morgan
Andy Morgan

Fluctuations are common. The causes can be numerous and they don’t always happen with a clearly definable reason but:

1) A higher than usual fiber intake one day will cause more gut residue
2) A higher than usual salt intake one day can cause more water retention the following day(s) and thus a weight increase.
3) A higher than usual carb intake will cause more glycogen storage and thus a weight increase.

These will all drop over the coming days. Any sudden change won’t/can’t be muscle or fat gain/loss.