A plant-based diet and regular exercise does wonders for the energy levels.
I would say this can help. Ones say plant foods can help to make us more regular, and plant fiber can help to feed gut bacteria which we need for healthy intestines and even vitamin production by gut bacteria. Also, it is said that different kinds of leafy plant can have various helpful chemicals, even for helping prevent cancer.
And activity of loving people is good. God's love has the best energy.
"Let all that you do be done with love." (1 Corinthians 16:14)
Word is out that sitting too much is dangerous. Possibly it is good to have short exercise things all through the day - - not some one big shot of it, or only a couple times a day - - but do little things here and there. Just get off your seat and move around and say hi to people, smile
Encourage people, somehow. Learn this at church, maybe. Are you worshiping and sharing and praying with church family people???
They can minister to us the energy of the right quality, for loving. We need the right kind of energy, not only make-it-happen energy.
God's grace is sufficient. So, this needs to be in our diet.
What are we feeding on, with our attention? Where we let our attention go can effect which sort of energy we are in. Are we attentive to submitting to God in His peace (Colossians 3:15)? Are we having hope in prayer for any and all people, including ones who are a problem and impossible for us > 1 Timothy 2:1-4 > love
"hopes all things" (in 1 Corinthians 13:7)?
Or, are we mainly depending on ourselves to make things happen, then escaping to TV and food and other physical things which can not love us?
How do we relax? It seems to me, how some number of people do not first seek to relax by being still with God, but they are depending on other things.
"'Take My yoke upon you and learn from Me, for I am gentle and lowly in heart, and you will find rest for your souls.'" (Matthew 11:29)