Why dont you try this woodworking project byREAL CEDAR DESIGN INSPIRATION & DIY PLANSon YouTube?
This fun and easy project can be a good area for you to relax or even do your exercises.
Start by installing the deck on a flat surface.

Image Credit: REAL CEDAR – DESIGN INSPIRATION & DIY PLANS via YouTube
plant the decking boards making sure to leave 14 between each piece.
Then, attach the trim to the top of the decking.
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Step 2
Complete the rectangle shape with the second frame.

Complete installing the three wall slats on the back of the frame.
Complete the sidewalls by installing supports.
Next, build the roof frames and finish them by adding the collar ties.

More details can be foundhere.
*All these images are credited toREAL CEDAR DESIGN INSPIRATION & DIY PLANSvia YouTube.