It’s not a suit but there is plenty I’ve done in jeans:

• 15km hike with 1000m vert
• 15 minutes kicking a floor to ceiling bag
• a 10 km run
• messing about with capoeira

It’s not that hard, people just have this idea of certain clothes being appropriate. Admittedly, I wouldn’t recommend these, but if there is something I want to do and I only have jeans then 🤷‍♂️