I’m pretty time challenged so do a lunch workout in company gym. Wear a 40lb weight vest & climb uphill on the treadmill for 35 minutes 2-3 days a week. Have a good steep 1.5 mile hike on my place do that with a pack & shotgun on the pack at night with a headlight several times right before. Mix in longer hikes with packs haphazardly. Walk the golf course & carry my bag instead of riding a golf cart when I get a chance to play. Not exactly marathon training but pretty focused on what I need at 60+ years of age.
