If yoga is supposed to ease stress by means of certain actions which we control, I would say we can pray and submit to God and how He keeps us from stress. There can be a big difference between self-produced actions, versus first submitting to God and simply obeying how He rules us in His peace > Colossians 3:15.
"'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)
We can learn from Jesus. Possibly in yoga our attention would not to be Jesus. Of course, there are plenty of other things which people do, in order to ease their stress, instead of first submitting to God and learning from Jesus.
"Even" praying can be a self-produced thing, and not submitting to God. There are people who hide in praying, away from the situation which is stressful; but changing circumstances is not the way. And using pleasures and TV and exercise and exciting things are possibly physical measures for dealing with what at its root is a spiritual trouble. These activities and things might help to distract us from what we stress about, but God is able to defend us and cure us so we can not be effected by stress and other cruel things. We need how God's peace
"will guard your hearts and minds through Christ Jesus" > see Philippians 4:6-7.
Also >
"rather let it be the hidden person of the heart, with the incorruptible beauty of a gentle and quiet spirit, which is very precious in the sight of God." (1 Peter 3:4)
I notice how the
"beauty of a gentle and quiet spirit" is
"incorruptible". In the gentleness and quietness of God's love, we are in this love's almighty power to protect us from anything which would corrupt us. But, "of course", we need to seek to be gentle and quiet, in order to please our Father. If we try to get rid of stress, only so we can do the things we want, in comfort, this is not going to work; because while we do our own things which our Father is not guiding us to do in His peace and strength, we are in weakness so we can suffer stress.
So, it is not methods and philosophy which can keep us from being corrupted by stress and other cruel and negative and degrading things, but the peace of God's gentle and quiet love shares with us His own almighty immunity against any and all sin-sick things. But, like I say, this works only while we submit to God and obey how He takes care of us
So, yoga is not the only thing which can be used to avoid feeling stress but can not cure us. Only God in the power of His love can cure us in our character so stress can't get the better of us.