Intense training programs will significantly increase energy expenditure which means, if you want to maintain weight, you’ll need to eat about 15% over your maintenance calories. If your goal is to gain weight, this should be a minimum requirement! However, if you want to lose weight, eating at or slightly below your baseline maintenance intake is a great start as the energy spent during training will create your deficit.
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▪️ Source: Campbell, W. W., Crim, M. C., Young, V. R., & Evans, W. J. (1994). Increased energy requirements and changes in body composition with resistance training in older adults. The American Journal of Clinical Nutrition, 60(2), 167-175.