You can eat more protein and fruit.

你可以摄入更多蛋白质、吃更多水果。

youdao

Choose a GREat breakfast (your best energy starts with a 30 second decision). Choose to eat no sugar and foods low in starch. Eat more protein and fruit. Start your day right to be more productive.

选择吃一顿精致的早餐。(只需要30秒作出的决定可以让你一整天都充满活力)。不吃糖，吃低淀粉的食物。摄入更多的蛋白质和水果。正确的开始以使你的一天更富有成效。

youdao

Research shows that when you eat your daily protein and fat at breakfast or lunch, you tend to lose weight and have more energy.

研究表明，当你每天在早餐和中午进食蛋白质和脂肪，你就更倾向于减肥和获得更多的能量。

youdao

Larklife will remind you to eat more protein than usual at breakfast, so that you have enough energy to get you through the day.

ENGADGET: Larklife fitness tracker syncs your data over Bluetooth, knows when you're running instead of walking

Experts say Americans eat more protein than their bodies need.

WSJ: Label Decoder: Protein Additives in Food

Perhaps it's true that British children need to get out more, and I would also recommend trying to eat smaller meals more times during the course of the day, and higher in protein meals at that.

BBC: Are our children becoming couch potatoes?