The ideal divide between high- and low-intensity exercise depends on each person’s fitness levels, training history, and more. As a general rule, when trying to lose fat, use low-intensity cardiovascular exercise to warm up and cool down from high-intensity, circuit-style, or heavy strength workouts as well as a form of active recovery on rest days.
One study from the University of Adelaide in Australia suggests you may lose more weight when you work out towards the end of your menstrual cycle, as opposed to right when a new one begins. That’s because the hormones estrogen and progesterone tell your body to use fat as an energy source. "Women burned about 30 percent more fat for the two weeks following ovulation to about two days before menstruation," study author Leanne Redman says.
Don’t think going low-carb on the overfeed day is going to improve the results. It will make them worse. You do not need to avoid fat, but you do need to work on making sweet potatoes, yams, and white rice the bulk of your diet for this one day. You can drown your sweet potatoes in butter or not; it doesn’t matter as long as you eat the potatoes. It’s important to choose glucose based carb sources like sweet potatoes and Taro over fruit. Fructose is 10-20% more lipogenic (fat forming) during overfeeding than glucose.
The pre-training meal may just be the most important meal of the day. This is the meal that will fuel your workout. For this meal it is important to get protein and carbs which will make their way into the blood stream around the time your training session is getting underway. The glucose in the bloodstream from the carbs will be used for energy, while the amino acids from the protein will spare stored amino acids from being catabolized during training.
This may explain why the fat-burning effects of eating more protein were confirmed in a study published in the American Journal of Physiology. One group was fed a high-protein diet (just over 1 gram per pound of body weight per day) while the second group consumed an amount closer to the lower recommendation of the RDA (recommended dietary allowance). The group eating the higher-protein diet burned the most fat.