Those tiles would work just fine. i still wouldnt be slamming down 100lb dumbells though.

A floating cork floor (click together) has a life span of 25+ years. As for durability of the cork itself, the US Library of Congress has had their cork floor (same stuff minus a few repairs) since the 1890's (more than 120 years). As far as we can tell (cork has only be used as a flooring material for 180 years...unlike stone = 10,000 years of use) cork will last as long as the thing it is glued to lasts. It is like rubber. So long as the adhesive keeps on keeping on the cork will too. That should be long enough for a work out space.

We got our basement gym flooring from Costco. It is a black rubbery and foam-like material that comes in 2 ft by 2 ft squares. The squares fit together like puzzle pieces. It was very inexpensive. $15-20 for a package and I think each package was 8 squares. We intended this floor to be a temporary fix because the floor we planned to order from ProSource was back-ordered. However, we like it so much we've kept it for 3 or 4 years now. I have seen it at Costco a few times. I think it is a seasonal item for the New Year's Resolution crowd.

Unfortunately the office in the bedroom is for my husband as he is currently working from home indefinitely and needs the privacy for phone calls and Zoom/Skype meetings. I was planning to have my desk somewhere in the main part of the house as I work at home occasionally, I still go in the office. Our house is 3 Bedrooms, Kitchen, small Casual Family Room in front of kitchen, and large open room (formal dining/living room) in the front entrance that is open concept. unfortunately there are no nooks, basement, or attics in the house which is why our space is limited. Each of the 3 bedrooms has a purpose: Master Bedroom that has limited space, Husbands office and he needs the privacy for phone calls, and the current guest room which will be utilized as a nursery/kids room in near future. The garage has both our cars already and we live in the desert where it gets over 100 degrees. So a gym in the garage is not an option.