Nutritionally, if you’re trying to increase your power you need to make sure that you’re taking on enough protein to help your muscles recover properly from your training.
Resistance work requires a small increase in your protein intake to compensate for the muscular breakdown and repair.
If your goal is to boost your power make sure you’re taking on around 1.8g of protein per 1kg of body weight.
Beef and chicken can have about 30g of protein per 100g, fish and pork about 22g. One egg should yield roughly 6g of protein. Nuts and seeds are another good source of protein.