I'm on 4G network, and with a not so bad mobile pone. Huawei P8 lite (2Gb Ram). If i have facebook and messenger apps running, I can't get one day of battery li

I'm on 4G network, and with a not so bad mobile pone. Huawei P8 lite (2Gb Ram). If i have facebook and messenger apps running, I can't get one day of battery life. Don't really understand why there apps are so power intensive.