Since I left the hospital on the sixth of this month, I have kept going hikinggone hiking everyday so far. Since I left the hospital on the sixth of this month, I have gone hiking everyday so far.

Since I left the hospital on the sixth of this month, I ha’ve kept going hiking so far. Since I left the hospital on the sixth of this month, I’ve kept going hiking.

This sounds more natural in the US.

Since I left the hospital on the sixth of this month, I have kept going hiking so far. Since I left the hospital on the sixth of this month, I have kept going hiking so far.

You can also use 6th instead of sixth

After I get ofut of bed, I wash my face and brush my teeth, and then go hiking. After I get out of bed, I wash my face and brush my teeth, and then go hiking.

After I get ofut of bed, I wash my face and brush my teeth, and then go hiking. After I get out of bed, I wash my face and brush my teeth, and then go hiking.

In the US, we get out of bed. It's a set phrase.

After I get ofut of bed, I wash my face and brush my teeth, and then go hiking. After I get out of bed, I wash my face and brush my teeth, and then go hiking.

There are many beautiful parks here and I often go hiking in therem. There are many beautiful parks here and I often go hiking in them.

Before I start to go hiking, I will set a thirty minute timer. Before I start to go hiking, I set a thirty minute timer.

Why?

Before I start to go hiking, I will set a thirty minute timer. Before I start hiking, I set a thirty minute timer.

When I am hiking, I will play music using my phone. When I am hiking, I play music using my phone.

When I a'm hiking, I wi'll play music usingon my phone. When I'm hiking, I'll play music on my phone.

or When I'm hiking, I listen to music on my phone. or When I'm hiking, I listen to music. (We assume you're using your phone because that's what a lot of people do these days.)

After I end thefinish hiking, I will stretch my handarms and legs. After I finish hiking, I stretch my arms and legs.

Repeated actions can use present tense construction, and future tense is not needed.

After I end th'm done hiking, I will stretch mydo hands and leg stretches. After I'm done hiking, I do hand and leg stretches.

This sounds more natural in the US. or After I'm done hiking, I do stretches on my hands and legs.

I learned those stretching methods online. I learned those stretching methods online.

I learn those stretching methodsed how to stretch online. I learned how to stretch online.

This sounds more natural in the US.

When I am doing the stretch, my muscles hurt, but after stretching, I feel relaxed and refreshed. When I stretch, my muscles hurt, but after stretching, I feel relaxed and refreshed.

I have regular lessons from 6:30 to 7:20 in the evening every day. I have regular lessons from 6:30 to 7:20 in the evening every day.

I have regular lessons from 6:30 to 7:20 in the eveningpm everyday. I have regular lessons from 6:30 to 7:20pm everyday.

More concise

After the lessons, I go hiking one more time. After the lessons, I go hiking one more time.

I have been hiking everyday for 8 days and I feel it is very helpful for my bodyhealth. I have been hiking everyday for 8 days and I feel it is very helpful for my health.

Or: physique, fitness, etc.

I have been hiking for 8 days and I feel it is very helpfullike it's good for my body. I have been hiking for 8 days and I feel like it's good for my body.

This sounds more natural in the US.