[honopu]

I do a stair climber, 2000 steps 5 days a week. I think this has a pretty good mix of cognitive and aerobic, I switch it up to skip steps, and stuff like that. I've not really noticed a huge change in energy, but resting heart rate etc have dropped considerably in the last year. I recommend a combo of this with a podcast to stave off the boredom. Mental clarity wise, I feel like your brain and body need the elevated heart rate etc, and this link seems to back it up.

[blackearl]

Kettlebells have gotten a very bro-ey reputation but there are some great exercises that are a good mix of cardio and mental focus. Regular swings can get boring but learning to do snatches was punishing, yet fun, while forcing me to pay attention to my technique. Would definitely recommend it.

[adamqureshi]

I started doing kettlebelle swings. I got upto doing about 70 swings and follow it up with 40 sumo squats then 50 lifts. Takes me 12 min. The workout is incredible and does not take long and i can do it at home. Trying to improve my form without paying a coach. I watch you tube videos from that russian guy pavel.

[nradov]

Stair climbers are great, but most people get better long term results by cross training a mix of different activities. Doing the same exercise daily tends to cause unbalanced muscle development and a higher risk of overuse injuries.