I believe moderate (not intense) morning exercise should contribute to good cardiovascular health. As for the spine, perhaps morning would require a little more attention to a warm-up period, say a few minutes of stretching and slow walking before the bicycle or fast walking.
Since blood is sent preferentially to the gut after eating--for the sake of digestion--moderate exercise before breakfast would theoretically be better in terms of blood irculation to the muscles.
No problem with exercising with 'swollen' discs: They are actually a bit plumper after a whole night lying down (counteracting gravity), and that just means that the spaces between the vertebrae are a bit wider--which equals a more comfortable back.
Drinking green tea will give you a tiny, tiny bit of caffeine, which could make you feel perkier. However, the water it's dissolved in also means you'll have to urinate more.
This site complies with the HONcode standard for trustworthy health information.
The Content on this Site is presented in a summary fashion, and is intended to be used for educational and entertainment purposes only. It is not intended to be and should not be interpreted as medical advice or a diagnosis of any health or fitness problem, condition or disease; or a recommendation for a specific test, doctor, care provider, procedure, treatment plan, product, or course of action. Med Help International, Inc. is not a medical or healthcare provider and your use of this Site does not create a doctor / patient relationship. We disclaim all responsibility for the professional qualifications and licensing of, and services provided by, any physician or other health providers posting on or otherwise referred to on this Site and/or any Third Party Site. Never disregard the medical advice of your physician or health professional, or delay in seeking such advice, because of something you read on this Site. We offer this Site AS IS and without any warranties. By using this Site you agree to the following Terms and Conditions. If you think you may have a medical emergency, call your physician or 911 immediately.