<instructions>Your goal is to analyze the following comment and estimate how highly it will be upvoted by the Hacker News community.</instructions><comment><author>bretpiatt</author><text>Depending on fitness level (cardio, muscle strength, physical weight) walking can very much be strenuous exercise.&lt;p&gt;Direct caloric burn, long term metabolism changes, etc. for a given activity vary based on the input fitness level of the person.&lt;p&gt;Calories in is the easiest levee to pull for rapid change as exercising enough for major direct calorie burn is challenging at the beginning. The biggest short term exercise impact is from activities that increase muscle mass as muscle takes calories to maintain thus boosting metabolism.</text><parent_chain><item><author>PuppyTailWags</author><text>I&amp;#x27;m pretty sure daily walks (no heart rate elevation, not HIIT, no muscle being built, etc.) didn&amp;#x27;t contribute significantly to your mother&amp;#x27;s weight loss. Moving around is not a significant contributor to weight loss[1]. Diet is the most significant contributing factor to gaining or losing weight. Moving in with someone new, new environment, new dietary changes, etc. might&amp;#x27;ve done significantly more.&lt;p&gt;1. &lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;www.ncbi.nlm.nih.gov&amp;#x2F;pmc&amp;#x2F;articles&amp;#x2F;PMC3925973&amp;#x2F;&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;www.ncbi.nlm.nih.gov&amp;#x2F;pmc&amp;#x2F;articles&amp;#x2F;PMC3925973&amp;#x2F;&lt;/a&gt;, from the abstract, &amp;quot;Based on the present literature, unless the overall volume of aerobic ET is very high, clinically significant weight loss is unlikely to occur. &amp;quot;</text></item><item><author>mensetmanusman</author><text>When my mother moved in and we went on daily walks, she lost a pound a week for a year. Her entirely sedentary lifestyle (and that of most Americans I know) is a major factor for her obesity. Standing is now considered exercise it has gotten so bad.&lt;p&gt;But people will blame anything instead of taking action, so…</text></item><item><author>elil17</author><text>After reading the series &amp;quot;A Chemical Hunger&amp;quot; by the blog Slime Mold Time Mold, I&amp;#x27;m pretty convinced that chemical contamination is a global-warming level threat to humanity. The authors talk about the evidence that chemicals released into the environment by human activity (such as PFAS) are causing obesity, and they present compelling evidence that this is plausible. They are also working on research to confirm this hypothesis.&lt;p&gt;But regardless of whether obesity is caused primarily by environmental contamination, chemical contamination is a huge risk for a few reasons:&lt;p&gt;-Once in the environment, chemical contaminants can react in unforeseen ways, creating new chemicals that we will have no idea how to monitor for.&lt;p&gt;-Health data prior to industrialization is not good and is confounded by poor medical practices, so we may think we&amp;#x27;ve &amp;quot;solved&amp;quot; chemical contamination when in fact we haven&amp;#x27;t (e.g. maybe heart disease would go away if it weren&amp;#x27;t for some chemical that we started using in 1910 but we can&amp;#x27;t tell because everyone was dying of dysentery).&lt;p&gt;-The solution, in some most cases, may mean giving up significant technological advances, especially polymers and heavy metals extracted from the ground.&lt;p&gt;&lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;slimemoldtimemold.com&amp;#x2F;2021&amp;#x2F;07&amp;#x2F;07&amp;#x2F;a-chemical-hunger-part-i-mysteries&amp;#x2F;&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;slimemoldtimemold.com&amp;#x2F;2021&amp;#x2F;07&amp;#x2F;07&amp;#x2F;a-chemical-hunger-p...&lt;/a&gt;</text></item></parent_chain></comment><story><title>3M’s PFAS Crisis Has Come to Europe</title><url>https://www.bloomberg.com/graphics/2022-3m-pfas-toxic-forever-chemicals-europe</url></story>
<instructions>Your goal is to analyze the following comment and estimate how highly it will be upvoted by the Hacker News community.</instructions><comment><author>mensetmanusman</author><text>Well, since I was there, I can say that her diet was mostly unchanged.&lt;p&gt;I will add that the walks were around an hour to two to get 10k steps and over 4 miles.&lt;p&gt;I challenge anyone to walk an extra ~25 miles a week with no diet change to see if they gain weight.</text><parent_chain><item><author>PuppyTailWags</author><text>I&amp;#x27;m pretty sure daily walks (no heart rate elevation, not HIIT, no muscle being built, etc.) didn&amp;#x27;t contribute significantly to your mother&amp;#x27;s weight loss. Moving around is not a significant contributor to weight loss[1]. Diet is the most significant contributing factor to gaining or losing weight. Moving in with someone new, new environment, new dietary changes, etc. might&amp;#x27;ve done significantly more.&lt;p&gt;1. &lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;www.ncbi.nlm.nih.gov&amp;#x2F;pmc&amp;#x2F;articles&amp;#x2F;PMC3925973&amp;#x2F;&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;www.ncbi.nlm.nih.gov&amp;#x2F;pmc&amp;#x2F;articles&amp;#x2F;PMC3925973&amp;#x2F;&lt;/a&gt;, from the abstract, &amp;quot;Based on the present literature, unless the overall volume of aerobic ET is very high, clinically significant weight loss is unlikely to occur. &amp;quot;</text></item><item><author>mensetmanusman</author><text>When my mother moved in and we went on daily walks, she lost a pound a week for a year. Her entirely sedentary lifestyle (and that of most Americans I know) is a major factor for her obesity. Standing is now considered exercise it has gotten so bad.&lt;p&gt;But people will blame anything instead of taking action, so…</text></item><item><author>elil17</author><text>After reading the series &amp;quot;A Chemical Hunger&amp;quot; by the blog Slime Mold Time Mold, I&amp;#x27;m pretty convinced that chemical contamination is a global-warming level threat to humanity. The authors talk about the evidence that chemicals released into the environment by human activity (such as PFAS) are causing obesity, and they present compelling evidence that this is plausible. They are also working on research to confirm this hypothesis.&lt;p&gt;But regardless of whether obesity is caused primarily by environmental contamination, chemical contamination is a huge risk for a few reasons:&lt;p&gt;-Once in the environment, chemical contaminants can react in unforeseen ways, creating new chemicals that we will have no idea how to monitor for.&lt;p&gt;-Health data prior to industrialization is not good and is confounded by poor medical practices, so we may think we&amp;#x27;ve &amp;quot;solved&amp;quot; chemical contamination when in fact we haven&amp;#x27;t (e.g. maybe heart disease would go away if it weren&amp;#x27;t for some chemical that we started using in 1910 but we can&amp;#x27;t tell because everyone was dying of dysentery).&lt;p&gt;-The solution, in some most cases, may mean giving up significant technological advances, especially polymers and heavy metals extracted from the ground.&lt;p&gt;&lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;slimemoldtimemold.com&amp;#x2F;2021&amp;#x2F;07&amp;#x2F;07&amp;#x2F;a-chemical-hunger-part-i-mysteries&amp;#x2F;&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;slimemoldtimemold.com&amp;#x2F;2021&amp;#x2F;07&amp;#x2F;07&amp;#x2F;a-chemical-hunger-p...&lt;/a&gt;</text></item></parent_chain></comment><story><title>3M’s PFAS Crisis Has Come to Europe</title><url>https://www.bloomberg.com/graphics/2022-3m-pfas-toxic-forever-chemicals-europe</url></story>