"feel mellow" is a correct and usable phrase in written English.
You can use it to describe a particular feeling of relaxation or contentment. For example, "I feel so mellow after a full day of rest and relaxation."
Also, other than the Joe Walshighlightsighlights, which included the show-stopping "Life's Been Good," "Rocky Mountain Way," in the encore, and the James Gang song, "Walk Away," as well as the Henley-fronted "Life In The Fast Lane," the Eagles are not an aggressively rocking band, so the shows feel mellow, adding to that peaceful, easy feeling (pun intended).
When SSRIs work they make people feel mellow and sanguine.
CBD (the psychoactive constituent that makes you feel mellow) is activated later at 180 degrees Celsius [356 degrees Fahrenheit].
At the other, under a gold-plated AARP sunset, is the implicit pressure of extreme prescription drugs -- to make us feel mellower, to grow more hair and have better sex.
Sprawled out on the yoga mat, he at first fantasizes that a police officer has ordered him to lie down on the ground; and next that, because the yoga has made him feel so mellow, he's stoned.
You know you are at a real reggae concert when you can feel a mellow, loving spirit enter the room and envelop you.
I feel pretty mellow today because, I dunno, it's Friday and raining, so I'll spare you the mommy-finger in that hurty spot between your shoulder and your boob.
Some service users focused on the 'feel good' factor, "I did feel incredibly mellow after the sessions… I felt like I was walking on air, it was brilliant.
To start with he would have felt a mellow, sleepy high as the drug triggered the release of dopamine in his brain.
