I have a barbell at home and ensure I get at least one workout including each of the "big 3" at least once a week. If I time it right and don't dally in between

I have a barbell at home and ensure I get at least one workout including each of the "big 3" at least once a week. If I time it right and don't dally in between sets I'm done in less than 15 minutes. The "big 3" are the core strength workouts of bench press, squat and deadlift. These are the workouts recommended by Rippetoe in Starting Strength: https://startingstrength.com/get-started/programs https://startingstrength.com/get-started/programs For me this usually translates to one day per week of "upper body" (bench, abs, whatever ancillary stuff like curls or skull crushers) and one day per week of "lower body" (squat, deadlift, ancillary stuff such as calves). Abs are worked in between on both days, usually with body weight exercises. This is enough to keep me in good shape. If I do the above 4 days per week instead of 2, it's enough to get me into great shape. All of the above can be done with a set of dumbbells going up to 20kg/50lb. You might substitute squats with lunges if you don't have access to a barbell.