Favorable today

Adjusting the Thrust Angle on Wrangler Rubicon was successfully performed yesterday. The procedure required some muscle work, it's very unlike for a geriatric like myself, removing big and heavy tire alone and adjusting arm length pushing vehicle frontally and backward, unusual heavy task was done by me. Getting up this morning, I feel some stiffness on my shoulder and hip muscles  as a matter of fact.
Is it better for me to avoid this kind of heavy work because old person's healthy condition would be destroyed and difficult to acquire original condition?
On the other hand, according to Japanese Welfare White Paper, it's better to exert oneself to the utmost at least once a month because some destruction of body cell and recovery of them again is the natural phenomena to keep a human body healthy condition, I would rather to take latter opinion by the Authority. So, periodical muscle work like yesterday might be a necessary requirement for me?
Two similar vehicles are inhabiting in my garage, both of them needs periodical maintenance, liquid material replacement tasks, motor oil including it's filter, brake fluid Dot#4, Dis brake caliper guide pin grease-up and LLC. VW Air-cooled Super Beetle also requires Dot#3 replacement. Anyway, Instrument, devices and equipment never release me free. To tell the truth, this surrounding condition might be good for me.

Also, finger fine work with ultimate precision like lens modification and maintenance is an indispensable hobby work for me to keep myself normal conditioned.
Konica Hexanon 45mm/1.6 lens, production of over 50 years ago was successfully transplanted this morning, onto SONY E-mount. All the functions are alive condition, straight helicoid, iris ling and barrel appearance, as it's shutter mechanism are all removed, shutter ring is just a decoration. Childishly funny decorations on the fuselage and hood are purposed not to invite unnecessary mental strain of the objective person, yes, toy-like device never attracts wariness.

My daily lives is not affected by the recent affair, it's convenient for me to go relaxed traffic both train and automobile. My business in medical field permits regally free movement.