I really like
James Wilson's Dumb Bell Combo workout. I've gotten better results from this than when I used to just wander from machine to machine and can actually spend less time in the gym. I do this only twice per week. While it's main audience is mountain bikers, I found it crosses over to skiing just fine. Well worth the $17.
The three things I get from it are:
1. Flexibilty/Mobility (key to avoiding injury)
2. Power
3. Endurance
Send me a PM if you decide to try this. I'll be happy to send you the tracking spreadsheet that I created for this system.
https://www.dbcombos.com/
Here's his regular website, if you'd like to read some of his articles:
https://www.bikejames.com/
I just started incuding
Tabata Intervals into my workout. Tabata is made up of three Rounds. Each Round is made up of 6 - 8 Intervals. Each Interval is 20 seconds of sprint, followed by 10 seconds of rest. You can do the same exercise for each interval or work your way through a circuit or series of exercises. I rest up for a couple/few minutes between rounds, so I can give the next Round 100%. If you give 100% sprint on each Round, you can expect to fall over gasping for air at the end of the round. I'm starting this to increase my VO2Max, but it's also supposed to be a great fat burner.
[Edit] PS. Always do a solid warm-up before Tabata. Otherwise, you risk injury with such intence sprint intervals.
On DB Combo days, I Tabata jump rope. And, once a week on a non-DB Combo day, I rotate twice through a 3-station circuit of bicycle crunch, jump rope, and mtn climber. There are plenty of Tabata demos on YouTube. You can really Tabata whatever you like.. punching bag, outdoor sprints, treadmill, stationary bike with braking system, jump rope, squat thrusts, etc. It's helpful to start with something that you are already comfortable doing, so you can keep your form and avoid injury.
https://www.gymboss.com/tabata.html
I use the
GymBoss timer for both the DB Combo Workout and the Tabata Intervals. It has two different interval settings, which is perfect for Tabata (20 second sprint followed by 10 second rest). I tried using the clock on the wall for the first couple weeks (because I'm cheap!) and found it hard to focus on my form and keep my energy level peaked while trying to watch the clock. The timer let's me stayed focused.
https://www.gymboss.com/
Good luck and don't forget to let us know what you end up doing!