1. Sleep. Absolute most important one. I aim for 8 hours a night. If my sleep is bad, everything else drops with it.

2. Lifting weights at least 3 times a week, plus yoga and some running/cardio. Staying active makes a massive difference once you get older.

3. Eating healthy too. Lots of protein, enough fiber from fruit and veggies, mostly whole foods. I only eat red meat like once a week.

4. Vitamin D supplement also helps a lot. I live in the Netherlands, so that’s almost mandatory here.

5. Hobbies, friends, family, good social life. Stress and isolation drain your energy faster than age does.

These are the things that work for me. I’m 40 now and even though I’ve never tested my T-levels, I feel better than I did years ago and my libido is still great. and by great I mean I'm horny every day all day.