By how much can one increase testosterone naturally?

Zinc or ZMA

8 hours or sleep

squats / bench / deadlift

no pussy cable machine exercises, until after compounds 

nofap 

Ehhh quite of bit of misinformation here. 

1.  8 hours of sleep is a general baseline, but not necessarily optimal for all people. Some individuals may only get a marginal benefit from increasing their sleep from say 6hrs to 8hrs, others may see a noticeable difference in energy/mood. 
2. Big 3 lifts are quite efficient in terms of muscle stimulation, however the caveat here is that have to be programmed correctly. Heavy squats/deads are incredibly taxing on your CNS and if your goal is strength AND hypertrophy you will likely not be getting optimal stimulus if you are 1rm'ing ever session. Obviously an extreme example, but the only thing that really matters is volume and intensity - do whatever movements you want. 
3. The "machines are bad!!" argument is just so tired and wrong. If you are purely a powerlifter, then sure, hammer away at big 3 lifts. However its been proven over and over again that for muscle growth, there is no real difference in results with machines vs compounds. If adequate volume and intensity is applied, then you will experience growth regardless. The exercises are more so just a tool to get there. That being said, some compounds will work more than one muscle group at once and be more time efficient, but this is entirely dependent on your goals. Compounds are also great for building functional movement patterns, so can't really say anything bad about that. One is not better than the other. If you look at pro bodybuilders, you will see machine and isolation exercises galore. It all depends on what you are trying to achieve. 
4. No fap hasn't really been proven to do anything, more of an incel movement than anything else. 

Looks like a big ole “ackshually” reply, tbh

- the point about 8 hours of sleep was to make sure you get adequate rest. No fucking duh it’s different for each person and not every person needs literally 8 hours of sleep 
 

- Who the fuck is 1rm’ing every session? 
 

- I said do machines AFTER compounds. This is WSO where dudes struggle to get laid, not bb.com
 

- There is a massive size difference in dudes at the gym who bench vs. those who skip bench and hit the pec deck only. Or those who squat vs. those that leg curl only 

- bodybuilders use machines BECAUSE THEYRE ALREADY SWOLE. they can focus on isolation exercises for majority of their workout

- nofap was mentioned in jest. I’m no scientist, but watching porn all day is prob gonna make you more tired than you’d normally be, and not be able to lift as much