I'm not sure I got the question right, but I will answer this as I understood it.

I cadon't boast a perfectly healthy back, so I do some exercises every morning.

I like spinal stretching, especially the lower back and the area between the shoulder blades.

Spinal stretching has a bit of a medical connotation, but otherwise fine. Sounds a bit scientific.

I can't imagine the day starting the day without this ritual.

Fine as it was, but this is a bit smoother.

I also drink a glass of water on an empty stomach, because at that moment,'s when I feel my body wakingstart to wake up.

I used to go there every week when I was a child, but now, as I live in a flat, and not in a house, I like to take a hot shower.

It gives met goosebumps when someone is massaging my head or shoulders.

A bit better this way.

At least, yYou can massage your head, palms, and feet, then you should tryrying to relax each part of your body one by one.

"At least" doesn't work here.

It'sThey are warm and comfortable, so itwearing them helps me to feel better at work and stay focused longer.

All of this (My life philosophy / habits) is not about feeling alive in the sense of an adrenaline meaningrush.

"All of this" is a bit vague, but fine otherwise.

I can't boast a perfectly healthy back, so I do some exercises every morning.

This is correct but more common ways to say this are: "I can't claim I have a perfectly healthy back," "I can't say I have the strongest back," "I can't say I've the healthiest back,"

I used to go there every week when I was a child, but now, as I live in a flat, and not in a house, I like to take a hot shower.

At the very least, you can massage your head, palms, and feet, then you should try to relax each part of your body one by one.

Recently, I have bought new clothes to wear to work.

All of this is not about feeling alive in a adrenaline meaningsense.

To be honest, when I'm in danger, my body doesn't feel alive, on the contrary, it's too stiff to feel anything but fear.

I'm not sure I got the question right, but I will answer this as I understood it.

I like spinalback stretching, especially the lower back and the area between the shoulder blades.

"Spinal" usually refers to the bones in your back.

I used to go there every week when I was a child, but now, as I live in a flat, and not in a house, I like to take a hot shower.

So, the idea is to self-massage.

At least, you can massage your head, palms, and feet, then you should try to relax each part of your body one by one.

It'sThey're warm and comfortable, so it helps me to feel better at work and stay focused longer.

"It's" -> "They're" as you used the plural clothes in the previous sentence

All of this is not about feeling alive in adrenaline meanthe way that people describe the feeling of adrenalinge.

So, my point isfocus is on comfort.