Anyone with metabolic syndrome should make every attempt to reduce their body weight to within 20% of their "ideal" body weight (calculated for age and height), and to incorporate aerobic exercise (at least 20 minutes) into their daily lifestyle. With vigorous efforts to reduce weight and increase exercise, metabolic syndrome can be reversed, and the risk for cardiovascular complications can be substantially improved.
I hate to burst anyone's bubble, but doing 5-10s intervals probably isn't going to do much for you – unless you're doing a ton of them, or using really short rest intervals.  Essentially, you have to get to the point where you shift over from the ATP-PC to the glycolitic (anaerobic) system.  This is a sweet spot where intensity of exercise is high while volume remains up – and that's how you create the "metabolic debt" that makes interval training so beneficial.
^ Ahlqvist, Emma; Storm, Petter; Käräjämäki, Annemari; Martinell, Mats; Dorkhan, Mozhgan; Carlsson, Annelie; Vikman, Petter; Prasad, Rashmi B; Aly, Dina Mansour (2018). "Novel subgroups of adult-onset diabetes and their association with outcomes: a data-driven cluster analysis of six variables". The Lancet Diabetes & Endocrinology. 0 (5): 361–69. doi:10.1016/S2213-8587(18)30051-2. ISSN 2213-8587. PMID 29503172.
The first line of treatment for hypertension is lifestyle changes, including dietary changes, physical exercise, and weight loss. Though these have all been recommended in scientific advisories,[111] a Cochrane systematic review found no evidence for effects of weight loss diets on death, long-term complications or adverse events in persons with hypertension.[112] The review did find a decrease in blood pressure.[112] Their potential effectiveness is similar to and at times exceeds a single medication.[12] If hypertension is high enough to justify immediate use of medications, lifestyle changes are still recommended in conjunction with medication.
Most doctors do not make a final diagnosis of high blood pressure until they measure your blood pressure several times (at least 2 blood pressure readings on 3 different days). Some doctors ask their patients to wear a portable machine that measures their blood pressure over the course of several days. This machine may help the doctor find out whether a patient has true high blood pressure or what is known as “white-coat hypertension.” White-coat hypertension is a condition in which a patient’s blood pressure rises during a visit to a doctor when anxiety and stress probably play a role.
^ Aronow WS, Fleg JL, Pepine CJ, Artinian NT, Bakris G, Brown AS, Ferdinand KC, Ann Forciea M, Frishman WH, Jaigobin C, Kostis JB, Mancia G, Oparil S, Ortiz E, Reisin E, Rich MW, Schocken DD, Weber MA, Wesley DJ, Harrington RA, Bates ER, Bhatt DL, Bridges CR, Eisenberg MJ, Ferrari VA, Fisher JD, Gardner TJ, Gentile F, Gilson MF, Hlatky MA, Jacobs AK, Kaul S, Moliterno DJ, Mukherjee D, Rosenson RS, Stein JH, Weitz HH, Wesley DJ (2011). "ACCF/AHA 2011 expert consensus document on hypertension in the elderly: a report of the American College of Cardiology Foundation Task Force on Clinical Expert Consensus Documents developed in collaboration with the American Academy of Neurology, American Geriatrics Society, American Society for Preventive Cardiology, American Society of Hypertension, American Society of Nephrology, Association of Black Cardiologists, and European Society of Hypertension". J Am Soc Hypertens. 5 (4): 259–352. doi:10.1016/j.jash.2011.06.001. PMID 21771565.
Both numbers in a blood pressure reading are important. But after age 50, the systolic reading is even more significant. Isolated systolic hypertension is a condition in which the diastolic pressure is normal (less than 80 mm Hg) but systolic pressure is high (greater than or equal to 130 mm Hg). This is a common type of high blood pressure among people older than 65.
After reading a recent Time article entitled “The Weight loss trap” I quite literally jumped off of my office chair, frustrated, angry and delighted. (I also lit up my husband’s phone with a thousand messages). I am so over misinformation in the weight loss space, but even more, it kills me that people are made to feel out of control and hopeless in their own bodies. Why delighted? Well, I was not quite ready to announce my upcoming book but I just could not give up this opportunity to share with you all of the reasons why Time has great points, but doesn’t tell the whole story. You can finally overcome weight loss resistance!
From another perspective, hypertension may be categorized as either essential or secondary. Primary (essential) hypertension is diagnosed in the absence of an identifiable secondary cause. Approximately 90-95% of adults with hypertension have primary hypertension, whereas secondary hypertension accounts for around 5-10% of the cases. [9] However, secondary forms of hypertension, such as primary hyperaldosteronism, account for 20% of resistant hypertension (hypertension in which BP is >140/90 mm Hg despite the use of medications from 3 or more drug classes, 1 of which is a thiazide diuretic).
^ Cheng J, Zhang W, Zhang X, Han F, Li X, He X, Li Q, Chen J (May 2014). "Effect of angiotensin-converting enzyme inhibitors and angiotensin II receptor blockers on all-cause mortality, cardiovascular deaths, and cardiovascular events in patients with diabetes mellitus: a meta-analysis". JAMA Internal Medicine. 174 (5): 773–85. doi:10.1001/jamainternmed.2014.348. PMID 24687000.

Type 2 diabetes: Type 2 diabetes affects the way the body uses insulin. While the body still makes insulin, unlike in type I, the cells in the body do not respond to it as effectively as they once did. This is the most common type of diabetes, according to the National Institute of Diabetes and Digestive and Kidney Diseases, and it has strong links with obesity.

Researchers had one group do four hours of cardio per week and another group weight train three times per week. The second group's weight training program was 10 exercises made up of 2-4 sets of 8-15 reps. Both groups lost weight but the resistance training group lost significantly more fat and didn't lose any lean body mass, even at only 800 calories per day. The resistance training group actually increased their metabolism compared to the cardio group, which decreased theirs.

Great read! Do you follow Jade Teta and Metabolic Effect? They use an RBT, or rest-based training, protocol for their metabolic workouts. Similarly to what you described above about not prescribing preset rest times, in RBT the autonomy is in the clients hands - not the trainer. So their metabolic workout may last 20 minutes where they are doing various compound ("hybrid") movements, but they rest as they need it. Basically they "push until they can't, then rest until they can". So they end up going hard, forcing themselves to rest, then picking back up, repeat for duration of workout. I have excellent success using RBT with my coaching clients. They get an awesome workout, but don't end up like your sometimes-client above, ha. As always, loved the post. Thanks! --Brian

Moderate weight loss, in the range of 5 to ten percent of body weight, can help restore the body’s ability to recognize insulin and greatly reduce the chance of developing diabetes. It will also lower blood pressure and cholesterol. Aerobic exercise such as a brisk 30-minute daily walk can be highly effective in improving insulin levels, facilitating weight loss, and improving related symptoms. Most practitioners recommend 30-60 minutes daily of moderate intensity exercise on at least five days a week either divided throughout the day or all at once; the same benefit is achieved either way.
Cortisol reactivity, an index of hypothalamic-pituitary-adrenal function, may be another mechanism by which psychosocial stress is associated with future hypertension. [20] In a prospective sub-study of the Whitehall II cohort, with 3 years follow-up of an occupational cohort in previously healthy patients, investigators reported 15.9% of the patient sample developed hypertension in response to laboratory-induced mental stressors and found an association between cortisol stress reactivity and incident hypertension. [20]